1. Statistic, 2. Data, 3. Pοpulatiοn, 4. Variable, 5. Parameter, 6. Sample
Statistic:
A statistic is a numerical value that describes a characteristic οf a sample.
Parameter: A parameter is a numerical value that describes a characteristic οf a pοpulatiοn.
Data: Data refers tο the infοrmatiοn cοllected in a study οr experiment. This can include numbers, text, οr οther fοrms οf infοrmatiοn that can be analyzed.
Variable: A variable is any characteristic οr attribute that can take οn different values in a study οr experiment.
Sample: A sample is a grοup οf individuals οr οbjects selected frοm a larger pοpulatiοn fοr the purpοse οf cοnducting a study οr experiment. The characteristics οf the sample are used tο make inferences abοut the larger pοpulatiοn.
Pοpulatiοn: A pοpulatiοn is the entire grοup οf individuals οr οbjects that a study οr experiment is cοncerned with. The characteristics οf the pοpulatiοn are οften οf interest, but it is usually nοt feasible tο cοllect data frοm every member οf the pοpulatiοn, sο a sample is used instead.
Here we have
A rancher is interested in the average age that a cοw begins prοducing milk.
The fοllοwing vοcabulary can be matched as fοllοws
1. The average age fοr the 62 milk cοws as they first prοduced milk - Statistic
2. The list οf the 62 ages - Data
3. All milk cοws - Pοpulatiοn
4. The age when a milk cοw first prοduced milk - Variable
5. The average age that all milk cοws are when they first prοduce milk - Parameter
6. The 62 milk cοws that were οbserved by the rancher: Sample
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sherita is painting the hallway of her apartment she draws a graph illustrating the proportional relationship of the minutes she works x to the passes through the point(16,18)
Part A: which ordered pair on the line would display Sherita’s unit rate of square feet painted per minute.
Part B:select all of the points that lie on the line
(2,2.5)
(3.5,3.9375)
(4,5)
(32,36)
(10,11.5)
(0,0)
The answer of the given question based on graph is Part A: the unit rate of square feet painted per minute is 1.125, so the ordered pair that displays this unit rate is (1, 1.125) and Part B: the points that lie on the line are (3.5,3.9375), (4,5), and (32,36).
What is Slope?Slope refers to the steepness of a line or a surface. More specifically, slope is defined as the ratio of the vertical change (rise) between two points to the horizontal change (run) between the same two points on a line or a surface. In other words, slope measures how much a line or a surface rises or falls as it moves horizontally.
Since the relationship between the minutes worked and the square feet painted is proportional, we can use the slope-intercept form of a linear equation to represent it:
To find the equation of the line, we can use the given point (16,18) and the fact that the relationship is proportional. If we let the unit rate be r (in square feet per minute), then we have:
18 = r(16)
r = 18/16
r = 1.125
So the equation of the line is:
y = 1.125x
Part A: The unit rate of square feet painted per minute is 1.125, so the ordered pair that displays this unit rate is (1, 1.125), since the slope represents the unit rate in a proportional relationship.
Part B: To determine which of the points lie on the line, we can plug in the x-values into the equation y = 1.125x and see if the resulting y-values match.
(y - 18) / (x - 16) = slope
Using the slope calculated above, we can simplify this equation to:
y = 1.125(x - 16) + 18
Now, we can plug in the x and y values for each point and check if they satisfy this equation:
(2,2.5): 2.5 = 1.125(2 - 16) + 18, not on the line
(3.5,3.9375): 3.9375 = 1.125(3.5 - 16) + 18, on the line
(4,5): 5 = 1.125(4 - 16) + 18, on the line
(32,36): 36 = 1.125(32 - 16) + 18, on the line
(10,11.5): 11.5 = 1.125(10 - 16) + 18, not on the line
(0,0): 0 = 1.125(0 - 16) + 18, not on the line
Therefore, the points that lie on the line are (3.5,3.9375), (4,5), and (32,36).
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As a Mathematics teacher, list and explain the intervention strategies you would
apply in your teaching in assisting a child who is like Peter and why do you think your
strategies will be effective? Substantiate your response by
Answer:
1. Differentiated Instruction: This intervention involves tailoring lessons and activities to meet the individual learning needs and preferences of students. For example, a teacher can design various instructional materials for students with different skill levels to ensure they engage in the lesson and learn effectively.
2. Explicit Instruction: This intervention involves breaking down a complex process or concept into smaller, more manageable parts, and explaining each part clearly and explicitly. The teacher provides ample opportunities for students to practice and apply what they have learned.
3. Formative Assessment: This intervention involves using ongoing, informal assessments to monitor students' progress and provide feedback to both students and teachers to make necessary adjustments. Teachers can use formative assessments to identify areas of difficulty and intervene early.
4. Collaborative Learning: This intervention involves encouraging students to work together in pairs or small groups to complete tasks or solve problems. Within these groups, students share ideas, clarify misunderstandings, and learn from each other.
Differentiated Instruction, Small Group Instruction, Formative Assessment, Peer Tutoring, Real-World Connections and Positive Feedback are the strategies to assist the child.
What is Teaching?Teaching can be defined as engagement with learners to enable their understanding and application of knowledge, concepts and processes
Differentiated Instruction, Small Group Instruction, Formative Assessment, Peer Tutoring, Real-World Connections and Positive Feedback:
These strategies are effective because they are research-based and have been shown to support students' learning in mathematics.
By catering to the specific needs of students, providing individualized support, and making connections to the real world, students are more likely to engage in mathematics, understand mathematical concepts, and develop positive attitudes towards mathematics.
Hence, Differentiated Instruction, Small Group Instruction, Formative Assessment, Peer Tutoring, Real-World Connections and Positive Feedback are the strategies to assist the child.
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Describe the graph of the equation x=4. Is the equation a function?
Answer:
x = 4 is a straight, vertical line at 4 on the x axis.
If the median of the following given data is 19, find the value of P उमेर वर्षमा (Age in Year) 12-18 18-24 24-30 feneffen (No. of Students) 10 P 4 6-12 4 30-36 3 36-42 3
If the median of the given data is 19, the value of P is 6.
What is median?In statistics, the median is a measure of central tendency that represents the middle value of a data set when it is arranged in numerical order. It is the value that separates the upper half of the data set from the lower half. To find the median of a set of data, the data must first be arranged in order from lowest to highest (or highest to lowest). If there is an odd number of data points, the median is simply the middle value.
Here,
To find the value of P, we first need to find the median class interval. We know that the median is 19, which means that half the data is above 19 and half the data is below 19. We can calculate the cumulative frequency of the data by adding up the frequencies of each class interval.
Age f cf
12-18 10 10
18-24 P 10+P
24-30 4 14+P
30-36 6 20+P
36-42 3 23+P
The total frequency is 23 + P. The median class interval is the interval that contains the 12th value (since we have 23 + P total values). To find the median class interval, we need to find the cumulative frequency that is closest to, but not less than, 12. In this case, the cumulative frequency that is closest to 12 is 10, which corresponds to the first class interval (12-18). Therefore, the median class interval is 12-18. We can use the following formula to find the value of P:
Median = L + (n/2 - F) * w
where L is the lower limit of the median class interval, n is the total frequency, F is the cumulative frequency up to the median class interval, and w is the width of the class interval.
For the median class interval of 12-18:
L = 12
n = 23 + P
F = 10
w = 6
Substituting these values into the formula, we get:
19 = 12 + ((23+P)/2 - 10) * 6
Simplifying the equation:
7 = ((23+P)/2 - 10)
14 = 23+P - 20
P = 6
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A surveyor is measuring the width of a pond. She chooses a landmark on the opposite side of the pond, and measures the angle to this landmark from a point 50 feet away from the original point. How wide is the pond to the nearest ft? A B 50 ft C
Answer: This issue can be resolved by employing trigonometry. Let's say that the surveyor is standing at point A, and the landmark on the other side of the pond is at point B. We can also make the assumption that the distance between points A and B is the width of the pond we need to find. Now, let's draw a line from point A to point B to represent the pond's width. Let's call this distance x. The surveyor's distance from the pond can also be represented by drawing a line 50 feet away from point A to point C.
The tangent of an angle is the opposite side (in this case, x) divided by the adjacent side (in this case, 50 feet), so we can now use the tangent function to determine x. We now have:
Rearranging this equation allows us to solve for x: tan(theta) = x/50, where theta is the angle between the lines from point A to point B and point A to point C.
We do not know the value of theta, but we are aware that the surveyor measured the angle to the landmark. x = 50*tan(theta) We should expect that the assessor estimated the point in degrees. Then, we can multiply the angle's tangent by 50 to get x using a calculator. For instance, if the surveyor measured an angle of 30 degrees, we would have:
The pond's width is therefore approximately 28.85 feet, rounded to the nearest foot, as x = 50tan(30) = 500.577. The response isn't given in the decisions, yet it is nearest to 29 feet
Step-by-step explanation:
I need question b) on this photo .
11th grade
Thank you
Please find attached the scatter graph that illustrates the data.
b. The equation of the regression line is; y = 4.1783·x - 56.656
The gradient is 4.1783 Pounds per 1000 pounds increase in income
What is a scatter graph?A scatter diagram or graph is a graph that can be obtained by plotting the values of an ordered pair on a coordinate plane.
The steps to create a scatter graph using MS Excel are as follows;
1. Enter the values for the Income in a column on MS Excel such as in column A with values in A1 to A8.
2. Enter the data for the grocery bill in the B1 to B8
3. Select the data in the above two columns, then choose Insert menu on the Menu bar then choose the Charts drop down and choose Scatter to create the scatter graph
The equation of the regression line can be obtained from the above graph by selecting the graph then choose 'Chart Design' in the 'Chart Tools. menu that appear in the Menu bar.
Choose 'Add Chart Element' in the 'Chart Design' menu then choose 'TrendLine' then 'More Trendline Options' from the Trendline pop up menu.
The 'Format Trendline' dialogue opens at the right of the screen at at the bottom of the dialogue box select 'Display Equation on chart' check box to display the trendline equation.
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A farmer finds there is a linear relationship between the number of bean stalks, n , she plants and the yield, y , each plant produces. When she plants 30 stalks, each plant yields 32 oz of beans. When she plants 36 stalks, each plant produces 30 oz of beans. Find a linear relationship in the form y=mn+b that gives the yield when n stalks are planted.
Answer:
y = (-1/3)n + 42
Step-by-step explanation:
We can use the point-slope form of a linear equation to find the slope of the line:
slope = (y2 - y1) / (x2 - x1) = (30 - 32) / (36 - 30) = -1/3
Now we can use one of the points (30, 32) to find the y-intercept:
y = mx + b
32 = (-1/3)(30) + b
b = 42
So the linear relationship between the number of bean stalks and the yield is:
y = (-1/3)n + 42
ect ec A weather center collects rain data for 10 years at two lakes. The amount of annual rainfall for each lake during that time period is shown by the graphs. Annual Rainfall Amounts reat ang 02 + 4 Lake Warbler Lake Mockingbird 6 8 10 12 14 16 18 20 22 24 26 28 30 Rainfall (inches) 2 Which statement correctly describes the spreads of the data distributions for the lakes? The spreads of the data distributions are about the same for both lakes. BThe spread of the data distribution for Lake Mockingbird is about 40% greater than the spread for Lake Warbler. The spread of the data distribution for Lake Mockingbird is 3 inches less than the spread of the data distribution for Lake Warbler. The spread of the data distribution for Lake Mockingbird is 5 inches greater than the spread of the data distribution at Lake Warbler. 3 Which statement is NOT true about the data? A The spreads for the first 25% of the data distributions for both lakes are equal. B The distribution for Lake Mockingbird shows a center that is 3 inches greater than the center of the distribution for Lake Warbler. The interquartile range of the data distribution for Lake Warbler is about 60% of the interquartile range for Lake Mockingbird. D The data distributions for both lakes appear to be skewed left.
The correct answer is B. The spread of the data distribution for Lake Mockingbird is about 40% greater than the spread for Lake Warbler.
The statement that is NOT true about the data is B. The distribution for Lake Mockingbird shows a center that is 3 inches greater than the center of the distribution for Lake Warbler. This statement cannot be determined from the given information. The data distributions for both lakes appear to be skewed right, not skewed left, since the longer tail of the distribution is on the right-hand side of the graph. The given graphs show the amount of annual rainfall, in inches, for Lake Warbler and Lake Mockingbird for a period of 10 years. To describe the spreads of the data distributions for both lakes, we can compare their range or interquartile range. Looking at the graphs, we can see that Lake Mockingbird has a wider spread of data points than Lake Warbler. The maximum rainfall for Lake Mockingbird is approximately 30 inches, while for Lake Warbler it is approximately 24 inches. Therefore, the correct answer to the first question is B. Regarding the second question, statement B cannot be determined from the given information, as the centers of the distributions are not explicitly provided in the graphs. Therefore, the correct answer is B. Finally, it appears that both data distributions are skewed right, which means that there are more data points with low rainfall and fewer data points with high rainfall. This is evident from the graphs, which show a longer tail of the distribution on the right-hand side
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Section 1: Problem Statement - Finance 302
John Smith is 30 years old and graduated from CSUSM some years back, with a Business degree and an emphasis in Marketing. John is currently employed as a Marketing Manager at a well-known corporation. He has progressed well in his career, with the ultimate goal of becoming the company’s CEO. John’s current salary of $78,000 has increased at an average rate of 5% per year, with routine merit raises, and he expects it keep increasing.
John’s firm, ABC Corporation, has a defined contribution plan (401k) plan in place. Employees are allowed to contribute up to 15% of their gross annual salary pre-tax. Unfortunately, John has not yet taken his professor’s advice to “Save, Start Young, and Pay Yourself First.” Instead, John has enjoyed his post-college, nice-salary life by leasing a new car, renting an apartment and going out to Players every weekend. Now that he has wedding plans on the horizon, John has come to the realization (with help from his fiancée, Jane Doe) that it’s time to start saving while he’s still relatively young!
John expects that the lovebirds’ two largest future expenses will be the cost of a wedding (short-term), then later the down payment on a house (intermediate-term). The couple plans to spend $10,000 of their own money on the wedding in twelve months. They also hope to purchase a $400,000 house within 5 years. Jane’s parents have promised to match their 10% down payment on the house, but only if they manage to save it within 5 years. Finally, John would like to retire at age 60, since his own father died at age 59 and did not get to enjoy the fruits of his labor in retirement. Both future spouses agree that John will automate his savings by setting up monthly contributions to his wedding fund, house fund and 401k accounts.
Section 2: Questions
Your assignment should begin with a “Data” section, documenting all of the numerical assumptions provided in this assignment.
Your calculations will require the use of a financial calculator. Please provide your detailed calculations, step-by-step, including calculator functions, in order to receive maximum credit – or partial credit if the final answer is incorrect.
1) John Smith is finally ready to take advantage of his employer’s 401k plan towards his retirement goal of age 60. Assume that John contributes 10% of his current salary every year, with an 8% annual return compounded annually. How much would he have saved at age 60?
2) a) How much money would John have to save every year to achieve an age 60 balance of one million dollars?
b) What percentage of his current salary is that annual savings amount?
3) John’s fiancée, Jane Doe, is adamant about getting married in the next year. She is insisting that John makes saving towards the $10,000 needed their top priority. John recalls that his professor said, “don’t invest in long-term investments with short-term money.” Therefore, he plans to keep the wedding account in the bank and buy short-term (under 1-year maturity) CD’s. Assuming John stays continuously invested in CD’s yielding 2% annual yield for the duration of each monthly deposit from the beginning month (Month 0), how much will he have to contribute to the wedding fund every month for the next 12 months?
4) Jane does acknowledge that saving for a home down payment is not as big of a priority. But both future spouses agree that they should start putting money away towards the goal of $40,000 within five years. John recalls that an intermediate-term savings plan should not take as much risk, so he will plan to earn 4% annually with a conservative strategy for their house fund. How much money will he have to save every month for the next 60 months to accumulate $40,000?
5) Planning on an early retirement at age 60, John will start withdrawing from his 401k every month. He plans to start with $1,000,000 in his 401k, with a life expectancy of 85 years. Assuming a rate of return on his account of 6% annually, how much can he withdraw every month for his retirement expenses? (HINT: use I/Y = 6%/12 = 0.5% monthly)
Data: John's current pay is $78,000. Annual salary increase rate: 5% Maximum 401k contribution: 15% of pre-tax gross yearly salary Every year, John intends to pay 10% of his current earnings to his 401k.
Annual compounded return on 401k investments is expected to be 8%.
$10,000 wedding money target in 12 months
Short-term CD interest rate: 2%
Goal for house down payment: $40,000 in 5 years
Annual expected return on housing fund investments: 4%
At the age of 60, your 401k balance is $1,000,000.
85 years is the average life expectancy.
0.5% (6%/12) monthly rate of return on retirement investments
To figure out John's 401k balance at age 60, do the following:
Compute John's annual contribution to his 401k: $78,000 x 10% = $7,800
Employ the financial calculator's future value (FV) function:
N (number) = 30 (number of years until retirement)
I/Y = 8% (annual rate of return)
PMT = -$7,800 (negative because it’s a cash outflow)
PV = 0 (no initial balance)
FV = $?
FV = $1,057,323.95
Therefore, John would have saved approximately $1,057,323.95 at age 60.
a) To achieve an age 60 balance of one million dollars:
Use the present value (PV) function on the financial calculator:
N = 30 (number of years until retirement)
I/Y = 8% (annual rate of return)
PMT = -$? (negative because it’s a cash outflow)
PV = 0 (no initial balance)
FV = $1,000,000
PMT = -$9,308.79
Therefore, John would have to save approximately $9,308.79 every year to achieve an age 60 balance of one million dollars.
b) To find the percentage of his current salary that the annual savings amount represents: Divide the annual savings amount by John’s current salary: $9,308.79 / $78,000 = 0.1194
Multiply by 100 to get the percentage: 0.1194 x 100 = 11.94%
Therefore, the annual savings amount represents approximately 11.94% of John’s current salary.
To calculate how much John will have to contribute to the wedding fund every month for the next 12 months:
Use the present value (PV) function on the financial calculator:
N = 12 (number of monthly deposits)
I/Y = 2%/12 = 0.1667% (monthly rate of return)
PMT = -$? (negative because it’s a cash outflow)
PV = 0 (no initial balance)
FV = $10,000
PMT = -$821.47 As a result, John will have to contribute $821.47 to the wedding fund each month for the following 12 months.
To determine how much John must save each month for the next 60 months in order to acquire $40,000:
Employ the financial calculator's future value (FV) function:
N = 60 (number of months) (number of months)
I/Y = 4%/12 = 0.3333% (monthly interest rate)
PMT = -$? (negative since it represents a monetary outflow)
PV = 0 (no starting balance) (no initial balance)
FV = $40,000
PMT = -$603.94
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convert to slope-intercept form (y=mx+b)
Find the distance between the following pairs of points.
(2,-1),(7,-1)
Answer:
5
Step-by-step explanation:
[tex]\sqrt{(7-2)^2+((-1)-(-1))^2\\[/tex]
subtract 2 from 7
[tex]\sqrt{5^2+((-1)-(-1))^2[/tex]
raise 5 to the power of 2
[tex]\sqrt{25+((-1)-(-1))^2[/tex]
Multiply -1 by -1
[tex]\sqrt{25+(-1+1)^2[/tex]
Add -1 and 1
[tex]\sqrt{25+0^2[/tex]
Add 25 and 0
[tex]\sqrt{25[/tex]
rewrite 25 as 5^2
[tex]\sqrt{5^{2}[/tex]
pull term out from under the radical assuming positive real numbers.
5
1. Explain the difference between an in-text citation and the reference list.
Answer:
In-text citations are the short citations you include in the written text that help a reader to understand which sources you are quoting or referring to in your writing example(Field, 2022). Reference is the full details of the source you have cited in your writing.
We have been given that the ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 28.5 years, with a standard deviation of 3.5 years.
The z-score for an age of 30 years is 0.43.
What is confidence interval?A confidence interval (CI) for an unknown parameter in frequentist statistics is a range of estimations. The most popular confidence level is 95%, but other levels, such 90% or 99%, are occasionally used for computing confidence intervals. The fraction of related CIs over the long run that actually contain the parameter's true value is what is meant by the confidence level.
To convert an age to a z-score, we use the formula:
z = (x - μ) / σ
where:
x = the age we want to convert to a z-score
μ = the mean age
σ = the standard deviation of the ages
For example, if we want to convert an age of 30 years to a z-score using the given information with μ = 28.5 and σ = 3.5, we have:
z = (30 - 28.5) / 3.5
z = 0.43
So the z-score for an age of 30 years is 0.43.
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Complete question:
Find the slope of the line shown in the graph. On a coordinate plane, a line goes through (0, negative 1) and (3, 0). a. 3 c. Negative one-third b. -1 d. One-third Please select the best answer from the choices provided
Answer:
The slope is [tex]\frac{-1}{3}[/tex]
Step-by-step explanation:
From the two points (0,-1) (3,0). The y values are 0 and -1. The x values are 3 and 0. The slope is the change in y over the change in x. You find the change by subtracting.
[tex]\frac{0-1}{3-0}[/tex] = [tex]\frac{-1}{3}[/tex]
Helping in the name of Jesus.
write an equation for the ellipse with vertices (-8, 5), (4, 5) and foci (-7,5),(3,5)
Answer:
Step-by-step explanation:
16
lbozo
What is the surface area of the triangular prism shown if a = 20 units, b = 29 units, c = 22 units, w = 15 units, and h = 21 units?
Please help thank you very much!
Hello!
Lets consider what the question asks for:
--> graphs of either line intersecting/parallel/identical
--> # of solutions the system has
The information given:
6x + y = 25
x + 3y = 3
Let's solve the FIRST problem
--> graphs of either line intersecting/parallel/identical
--> let's put both equations into slope-intercept form, where we
isolate the y-variable all by itself to one side
[tex]6x+3y=25\\3y=-6x+25\\\\y=-2x+\dfrac{25}{3}[/tex]
[tex]x+3y=3\\3y=-x+3\\y=-\dfrac{1}{3}x+1[/tex]
--> both equations AREN'T parallel as the slope (coefficient of x-
variable) aren't equal
--> both equations AREN'T identical as they don't look the same
--> both equations ARE INTERSECTING as they have different
slopes and aren't identical
Let's solve our second question:
--> how many solutions does the system have:
--> both lines intersect
-->both lines are linear as the highest power that the x-variable
has are 1
--> thus there is only ONE SOLUTION
Answer:
Intersecting
Has ONE SOLUTION
Help
Show your steps!!!!!!!! THANK YOU
The equation that represents the represents the rational function in the graph, based on the asymptotes and the intercepts is; y = ((3/4)·x - 3)/(x + 3)
What is an asymptote of a function?An asymptote is a line that approaches a curve but at any infinite distance, is still at some distance from the curve.
The asymptotes of the functions are;
Horizontal asymptote; x = -3
Vertical asymptote; y = 1
The points on the graph are;
y-intercept = (0, -1)
x-intercept = (4, 0)
The function is a rational function of the form f(x) = P(x)/Q(x)
The horizontal asymptote of x = -3 indicates that the denominator has a factor of (x + 3)
The vertical asymptote of y = 1 indicates that the degree of the numerator and the denominator are the same and the leading coefficients are the same
The function is therefore in the form; f(x) = (a·x + c)/(x + 3)
a = 1, therefore;
f(x) = (x + c)/(x + 3)
The y-intercept (0, -1) indicates that when x = 0, y = -1, therefore;
-1 = (0 + c)/(0 + 3)
-3 = c
c = -3
The function is therefore;
f(x) = y = (a·x - 3)/(x + 3)
The x-intercept (4, 0), indicates that when y = 0, x = 4, therefore;
0 = (a·4 - 3)/(4 + 3)
a·4 - 3 = 0
a = 3/4 = 0.75
The function is therefore;
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HELP PSLSSSSSSSSSSSSSS
Answer:
The answer is D. 65
Step-by-step explanation:
The first step is to substitute n as 4 and k as 13. This results in the fraction
[tex]\frac{4}{20}[/tex]= [tex]\frac{13}{x}[/tex]. Since there is an equal sign, this indicates you can cross multiply. That means that you would multiply the 4 with the x and the 20 with the 13. This results in the next step, which is 4x=20(13) ---> 4x=260. Finally, to find the value of x, divide the 4 from the x to isolate it. The reasoning behind this is that you have to do the inverse operation, meaning since 4 is being multiplied by x, the inverse of this is dividing by 4 to get x by itself. Also, whatever you do on one side of the equal sign, you have to do it on the other. Therefore, [tex]\frac{4x}{4}= \frac{260}{4}[/tex] ; x=65.
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Question
Which equation demonstrates the distributive property?
Responses
A (9 + 2)4 = 4(9 + 2)(9 + 2)4 = 4(9 + 2)
B 36 + 8 = 4436 + 8 = 44
C 36 + 8 = 4(9 + 2)36 + 8 = 4(9 + 2)
D 36 x 8 = 8 x 36
The equation that demonstrates the distributive property is 36 + 8 = 4(9 + 2), the correct option is C.
The distributive property states that when a number or variable is being multiplied by a sum or difference inside parentheses, the number or variable can be distributed or multiplied to each term inside the parentheses.
The equation that demonstrates the distributive property is C: 36 + 8 = 4(9 + 2). We can verify this by using the distributive property as follows:
4(9 + 2) = 4(11) = 44
Therefore, the equation can be written as:
36 + 8 = 44
This equation is true, which confirms that the distributive property was correctly applied.
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The complete question is:
Which equation demonstrates the distributive property?
Responses
A (9 + 2)4 = 4(9 + 2)
B 36 + 8 = 4
C 36 + 8 = 4(9 + 2)
D 36 x 8 = 8 x 36
a rectangular park has a length of (x + 5) and a width of (x - 2). What is the area of the park?
The area of a rectangle is given by the formula:
Area = length x width
In this case, the length of the park is x + 5 and the width is x - 2. So, we can substitute these expressions into the formula to get:
Area = (x + 5) x (x - 2)
Expanding the product, we get:
Area = x^2 + 5x - 2x - 10
Simplifying, we have:
Area = x^2 + 3x - 10
Therefore, the area of the rectangular park is given by the expression x^2 + 3x - 10.
The equation h(t) = -16t² +50t + 64 gives the height, in feet, of a potato t seconds after it has been launched. Use the QUADRATIC FORMULA to find when the potato hits the ground.
The potato hits the ground approximately 0.302 seconds after it has been launched.
What is quadratic formula?It is possible to solve quadratic equations of the type ax2 + bx + c = 0 using the quadratic formula, where a, b, and c are constants and x is the variable. The equation is:
x = (-b ± √(b^2 - 4ac)) / (2a)
According to question:In this case, we can use it to find the time when the potato hits the ground by setting h(t) = 0 and solving for t.
h(t) = -16[tex]t^2[/tex] + 50t + 64 = 0
Using the quadratic formula, we have:
t = (-b ± √(b² - 4ac)) / 2a
where a = -16, b = 50, and c = 64.
Plugging these values into the formula, we get:
t = (-50 ± √(50² - 4(-16)(64))) / 2(-16)
t = (-50 ± √(2500 + 4096)) / (-32)
t = (-50 ± √(6596)) / (-32)
We can simplify the square root:
t = (-50 ± 2√(1649)) / (-32)
We can also simplify the expression by dividing both the numerator and denominator by 2:
t = (25 ± √(1649)) / 16
So the time when the potato hits the ground is approximately:
t ≈ 0.302 seconds or t ≈ 2.095 seconds (rounded to three decimal places)
Note that we have two possible solutions because the quadratic equation has two roots. However, we can discard the negative value since time cannot be negative in this context.
Therefore, the potato hits the ground approximately 0.302 seconds after it has been launched.
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Find the value of J.
The value of j is equal to 9√3 meters.
What is a 30-60-90 triangle?In Mathematics and Geometry, a 30-60-90 triangle is also referred to as a special right-angled triangle and it can be defined as a type of right-angled triangle whose angles are in the ratio 1:2:3 and the sides are in the ratio 1:√3:2.
This ultimately implies that, the length of the hypotenuse of a 30-60-90 triangle is double (twice) the length of the shorter leg (adjacent side), and the length of the longer leg (opposite side) of a 30-60-90 triangle is √3 times the length of the shorter leg (adjacent side).
Note: j is the side opposite to the 60° angle.
The side opposite to the 60° angle, j = 9 × √3
The side opposite to the 60° angle, c = 9√3 meters.
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in an examination held it was discovered that 960 candidate took mathematics 780 took physics and 572 took chemistry .of these numbers 300 took both Mathematics and physics 340 took both Mathematics and chemistry 260 took both physics and chemistry while 130 candidates took all the three papers .how many candidates were there in that centre ?how many took Mathematics and physics? Only translate in a venn diagram
Answer 1452
Step-by-step explanation:
n(m n p n c) =n(m) + n(p) + n(c) - n(m n p) - n(m n c) - n(p n c) + n(m n p n c) = 960+ 780 + 572 - 300 - 340 - 260 + 130 = 1452
Need help, will give points.
The value of (f o g)(3) using composite function is 35
What is composite function?Composite function refers to the combining of functions in a manner where the output from one function becomes the input for the next function.
To calculate the composite function (f o g)(3), we use the techniques below.
From the question,
Given:
f(x) = 3x-1g(x) = x²+3Note that,
(f o g)(3) = f(g)(3)Step 1: Find g(3)
To find g(3) we suebtitute the value of x in g(x) by 3Therefore,
g(3) = 3²+3g(3) = 12Step 2: To find f(g)(3), we subetitute the value of x in f(x) by 12
f(g)(3) = 3(12)-1 f(g)(3) = 36-1f(g)(3) = 35Hence, (f o g)(3) is 35
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A rectangular room is 2 times as long as it is wide, and its perimeter is 48 meters. Find the dimensions of the room.
Answer: Let's assume that the width of the rectangular room is "x" meters. Then, according to the problem, the length of the room is 2 times the width, which means the length is "2x" meters.
The perimeter of the room is the sum of all four sides, so we can write:
Perimeter = 2 × (length + width)
Substituting the values, we get:
48 = 2 × (2x + x)
Simplifying the expression, we get:
48 = 2 × 3x
Dividing both sides by 2, we get:
24 = 3x
Solving for "x", we get:
x = 8
Therefore, the width of the room is 8 meters and the length is 2 times the width, which is 2 × 8 = 16 meters.
So the dimensions of the room are 8 meters by 16 meters.
Step-by-step explanation:
after allowing 20% discount on the marked price of a smart boad, 15% vat was levied and sold it . If the different between the selling price with vat and selling price after discount is rs 4500, find the marked price of that smart board.
Answer:
mp = 37500
Step-by-step explanation:
let mp be x
D.A = 20×x/100
= 20x/100
=x/5
price after discount = mp - DA
= x-x/5 = 4x/5
VAT= 15%of 4x/5
= 15/100 × 4x/5
= 60x/500
sp with vat= 4x/5 +60x/500
= 460x/500
sp with vat - sp after discount = 4500
460x/500-4x/5=4500
60x= 4500×500
x= 37500
A box contain 12 items of which 3 are defective.a sample of 3 items is selected at random from this box if x represents the number of defective items in the 3 selected items describe the random variable x
The random variable x can take on the values of 0, 1, 2, or 3, representing the number of defective items in the sample of 3 items.
Describing the random variable xThe random variable x represents the number of defective items in a sample of 3 items selected at random from the box.
Since there are 3 defective items out of 12 total items, the probability of selecting a defective item on the first draw is 3/12 or 1/4.
After the first draw, there are only 11 items remaining in the box, of which 2 are defective. Therefore, the probability of selecting a defective item on the second draw, given that the first draw was also defective, is 2/11.
Similarly, the probability of selecting a defective item on the third draw, given that the first two draws were also defective, is 1/10.
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What is the answer to this problem?
Answer:
C) neither. Both events are equally likely.
Step-by-step explanation:
Riley was a spectator at his town's air guitar competition. Contestants were allowed to play either the acoustic or electric air guitar, but not both. Riley recorded which type of guitar each contestant played. He also counted the number of contestants wearing different kinds of pants, as there were some interesting stylistic choices.
What is the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants?
show all steps
The conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, is 0.6 or 60%.
What is Probability ?
Probability is the measure of the likelihood or chance of an event occurring. It is a mathematical concept that is used to quantify uncertainty and provide a basis for making informed decisions in various fields such as science, engineering, economics, and finance.
To find the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, we need to use the formula for conditional probability:
P(A | B) = P(A and B) / P(B)
where A is the event that the contestant played an acoustic guitar, and B is the event that the contestant wore leather pants.
We are not given the total number of contestants in the competition, but we can use the information provided in the table to calculate the probabilities of A and B, as well as the joint probability of A and B.
Let's first calculate the probability of B:
P(B) = number of contestants wearing leather pants / total number of contestants
P(B) = 15 / 45
P(B) = 1/3
Now, let's calculate the joint probability of A and B, i.e., the probability that a randomly selected contestant played an acoustic guitar and wore leather pants:
P(A and B) = number of contestants who played acoustic guitar and wore leather pants / total number of contestants
P(A and B) = 6 / 45
Finally, we can use the formula for conditional probability to find the probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants:
P(A | B) = P(A and B) / P(B)
P(A | B) = (6 / 45) / (1/3)
P(A | B) = 0.6
Therefore, the conditional probability that a randomly selected contestant played an acoustic guitar, given they wore leather pants, is 0.6 or 60%.
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