Answer:
15h-6k+12m
Step-by-step explanation:
The perimeter of the triangle is the sum of all of its side lengths
P=a+b+c
If a=5h-4k
b=10h+7m
c=5m-2k
Then the formula would be
P=(5h-4k)+(10h+7m)+(5m-2k)
P=15h-6k+12m
Hope this helps!
-3 > 5 -b
Please help
Step-by-step explanation:
To solve the inequality:
-3 > 5 - b
We can start by isolating the variable b on one side of the inequality. We can do this by subtracting 5 from both sides of the inequality:
-3 - 5 > -b
Simplifying the left-hand side of the inequality, we get:
-8 > -b
To isolate b, we can multiply both sides of the inequality by -1. When we do this, we need to reverse the inequality sign:
8 < b
So the solution to the inequality is:
b > 8
This means that b must be greater than 8 for the inequality to be true.
50 Points! Multiple choice algebra question. Photo attached. Thank you!
The half-life of the particular compound is approximately 9.4 days. (Correct choice: B)
How to find the half-life of a compound
The statement indicates the decay function of a particular compound, which is an exponential function of the form:
y = a · exp(- λ · t)
Where:
a - Initial mass of the compound.λ - Decay constant, in days⁻¹.t - Time, in days.The half-life of the particular compound is determined by the following expression:
t = ㏑ 2 / λ
Where t is the half-life.
If we know that λ = 0.0736, then the half-life of the particular compound is:
t = ㏑ 2 / 0.0736
t = 9.4 days
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help please
the triangle above has the following measures. q = 7cm m
Answer:
Put your calculator in degree mode.
sin(35°) = 7/r
r sin(35°) = 7
r = 7/sin(35°) = 12.2 cm
Fully factorise 27t² + 15t
Answer: 3t(9t + 5)
Step-by-step explanation:
Sure! Factoring involves breaking down an expression into simpler factors that, when multiplied together, give the original expression.
To factor 27t² + 15t, we can look for the greatest common factor (GCF) of the two terms. The GCF of 27t² and 15t is 3t, because both terms can be divided by 3t.
So we start by factoring out the 3t:
27t² + 15t = 3t(9t + 5)
Notice that we can check if the factorization is correct by using the distributive property to multiply the factor 3t by the expression inside the parentheses:
3t(9t + 5) = 3t(9t) + 3t(5) = 27t² + 15t
Therefore, 27t² + 15t can be fully factorized as 3t(9t + 5).
50 Points! Multiple choice algebra question. Photo attached. Which represents the correct synthetic division of (x^2-4x+7) divided by (x-2)? Thank you!
Option D is the correct synthetic division of (x^2-4x+7) divided by (x-2)
What is the synthetic division?Synthetic division is a shorthand procedure used to divide a polynomial by a linear factor of (x - a) form, in which "a" is constant. This method gives an expedient way to locate the quotient and remainder without carrying out long division.
x - 2 | x^2 - 4x + 7
x^2 - 2x
---------
-2x + 7
-2x + 4
-------
3
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Write as a product 4x^2+y^2-4xy-16
PLEASEEE Help :')
Need by TONIGHT 11:59 EDT
Will give brainliest (need 2+ ppl to answer to give brainliest, I will give the first answer branliest)
Answer:
We can write 4x^2 + y^2 - 4xy - 16 as the product:
(2x - y + 4)(2x - y - 4)
Step-by-step explanation:
To write 4x^2 + y^2 - 4xy - 16 as a product, we can use the technique of completing the square. First, we can rearrange the terms to group the x terms and the y terms:
4x^2 - 4xy + y^2 - 16
Next, we can complete the square for the x terms and the y terms separately. For the x terms, we can add and subtract (2x)^2:
4x^2 - 4xy + (2x)^2 - (2x)^2 + y^2 - 16
Simplifying the first three terms gives:
(2x - y)^2 - (2x)^2 + y^2 - 16
For the y terms, we can add and subtract 16:
(2x - y)^2 - (2x)^2 + (y - 4)^2 - 16^2
Simplifying the second term gives:
-(4x^2) + 16x - (y^2) + 16y - 16^2
Therefore, we can write 4x^2 + y^2 - 4xy - 16 as the product:
(2x - y + 4)(2x - y - 4)
Given that the coefficient of x⁵ in the expansion of (1+kx)⁵ is -672 find the value of k
The value of k that satisfies the given condition is approximately 0.4041.
In the expansion of (1+kx)⁵, the coefficient of x⁵ is given by the term:
C(5,k) * (kx)⁵ = k⁵ * C(5,k) * x⁵
where C(5,k) is the binomial coefficient or the number of ways to choose 5 items out of k.
So, we have the equation:
k⁵ * C(5,k) = -672
We can use a table of binomial coefficients to find C(5,k) for different values of k, but this can be time-consuming. Alternatively, we can use the fact that C(5,k) = C(5,5-k) and rewrite the equation as:
k⁵ * C(5,5-k) = -672
Expanding C(5,5-k), we get:
k⁵ * C(5,5-k) = k⁵ * C(5,k) = -672
Now, we can use trial and error to solve for k. Using this method, we can find that k = -4 or k ≈ 0.4041. However, since k must be positive (since it appears as a factor in the expansion), the only valid solution is k ≈ 0.4041.
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What is the domain indicated on the graph for each portion of the piecewise function?
f(x) = StartLayout enlarged left-brace 1st Row 1st column negative 2, 2nd column Domain 1st piece 2nd row 1st column 2 x + 1, 2nd column Domain 2nd piece Third row 1st column negative one-half x, 2nd column Domain 3rd piece EndLayout
The domain of the 1st piece is -10 < x < 0, for 2nd piece is 0 < x < 4, and for 3rd piece is 4 < x < 8.
What is a function?A function is a particular kind of relationship where there is a set domain and range, and every input value in the domain is associated with a single output value in the range.
We have a piecewise function shown in the picture:
From the graph:
f(x) = -2, Domain: -10 < x < 0
f(x) = 2x + 1, Domain: 0 < x < 4
f(x) = (-1/2)x, Domaim: 4 < x < 8
Thus, the domain of the 1st piece is -10 < x < 0, for 2nd piece is 0 < x < 4, and for 3rd piece is 4 < x < 8.
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PLEASE HELP !!! MAJOR GRADE!!!!
Column A
1. A set of two of more linear equations that contain 2 or more variables.
2. When there is no answer to a system of equations or inequalities.
3. There is only one value for the variable that makes the equation true.
4. Terms with the same variables raised to the same exponent.
5. Equation is solved for one variable and that solution is substituted into the second equation.
6. A value that makes the equation true.
7. Adding subtracting or multiplying a system of equations to help solve a system.
8. A linear equation in one variable has infinitely
many solutions.
9. A letter that represents one or more numbers.
10.This is the number in front of the variables in a term
Column B
a. Elimination
b. Substitution
c. Solution
d. Infinitely Many Solutions
e. No solutions
f. System of Equations
g. Variable
h. Like Terms
i. One solution
j. Coefficients
Answer:
1. f. System of Equations
2. e. No solutions
3. i. One solution
4. h. Like Terms
5. b. Substitution
6. c. Solution
7. a. Elimination
8. d. Infinitely Many Solutions
9. g. Variable
10. j. Coefficients
Step-by-step explanation:
Ur welcome :)
write the opposite of loss of 700
Answer:
gain of 700 or 700
Step-by-step explanation:
A loss of 700 would be -700 and the opposite of that is 700.
Helping in the name of Jesus.
the diagram below shows all the possible totals from adding the results of rolling a two fair dice.
a) whats the probability of rolling a total of 5? give ur answer as a fraction in its simplest form.
b) if you rolled a pair of fair dice 180 times, how many times would you expect to roll a total of five?
Answer:
Expected number of times to roll a total of 5 = Probability of rolling a total of 5 x Total number of rolls
= (1/9) x 180
= 20
Step-by-step explanation:
The diagram is not visible in the question. However, I can provide a general method to solve the problem.
a) To find the probability of rolling a total of 5, we need to count the number of ways we can get a sum of 5 and divide it by the total number of possible outcomes. From the diagram, we can see that there are four ways to get a sum of 5: (1,4), (2,3), (3,2), and (4,1). Since each die has six equally likely outcomes, there are 6 x 6 = 36 possible outcomes in total. Therefore, the probability of rolling a total of 5 is:
Probability of rolling a total of 5 = Number of ways to get a total of 5 / Total number of possible outcomes
= 4/36
= 1/9 (in its simplest form)
b) If we rolled a pair of fair dice 180 times, the expected number of times we would roll a total of 5 can be calculated as follows:
Expected number of times to roll a total of 5 = Probability of rolling a total of 5 x Total number of rolls
= (1/9) x 180
= 20
Given: Prove: Three lines AD, CF, and BE are intersecting each other at the midpoint O Complete the proof. It is given that and . By the , . Therefore, . By the , , and by the , . After application of the ,
Answer:Given: Three lines AD, CF, and BE intersect at point O such that and
To prove: O is the midpoint of all three lines, i.e., AO = BO = CO
Proof:
Since point O lies on line AD, we can write
(1) AO + OD = AD
Similarly, since O lies on line BE, we have
(2) BO + OE = BE
Also, since O lies on line CF, we have
(3) CO + OF = CF
From the given information, we have
(4) AD = BE
Substituting (4) in (1) and (2), we get
(5) AO + OD = BO + OE
Adding (3) to (5), we get
(6) AO + BO + CO + OD + OE + OF = AD + BE + CF
From the given information, we have
(7) CF = AD + BE
Substituting (7) in (6), we get
(8) AO + BO + CO + OD + OE + OF = 2AD + 2BE
Since we know that AD = BE, we can simplify (8) as
(9) AO + BO + CO + OD + OE + OF = 4AD
Dividing both sides of (9) by 4, we get
(10) AO + BO + CO = AD
But from (4), we also know that AD = BE, so we can write
(11) AO + BO + CO = BE
Dividing both sides of (11) by 2, we get
(12) AO = BO = CO
Hence, we have proved that O is the midpoint of all three lines, i.e., AO = BO = CO.
Step-by-step explanation:
Making an Informed Decision Using the Quantitative Reasoning Process
Step 1: Understand the Problem
Keep the Old Car or Buy a Used Car
Manny is an online student who currently owns an older car that is fully paid for. He drives, on average, 190 miles per week to commute to work. With gas prices currently at $
2.9 per gallon, he is considering buying a more fuel-efficient car, and wants to know if it would be a good financial decision.
The old car Manny owns currently gets 18 miles per gallon for average fuel efficiency. It has been a great vehicle, but with its age, it needs repairs and maintenance that average $
770 per year (as long as nothing serious goes wrong).
The newer, more fuel-efficient car that he is looking at to purchase will cost a total of $
6,500 over a three-year loan process. This car gets 32 miles per gallon and would only require an average of $
10 per month for general maintenance. To help make a decision, Manny wants to calculate the total cost for each scenario over three years. He decides to use the quantitative reasoning process to do this.
Step 2: Identify variables and assumptions
Manny has identified some key variables for his situation. Select the two variables that should be removed from his list because they do not apply to the current situation.
Manny’s graduation date from elementary school.
The cost of repairs on the old car.
The cost of gas.
The number of miles Manny drives each week.
Manny’s wages.
The loan cost of the used car.
The year Manny was born.
The cost of the used car.
Manny has also made a list of key assumptions he will be using to make his decision. Check the boxes for the three assumptions from his list that are not useful in this scenario.
Manny assumes that nothing will go seriously wrong with either car during this three year period.
Manny assumes the loan period will be 3 years.
Manny assumes gas costs will remain about the same over the three years.
Manny assumes he will continue to go running in the mornings every weekday for the next three years.
Manny assumes there are 52 weeks in a year.
Manny assumes his lunches will continue to cost about the same for the next three years.
Manny assumes he will continue to drive about the same number of miles each week over this three year period.
Manny assumes he will still like spinach at the end of three years no matter which choice he makes.
Step 3: Apply Quantitative Tools
Use computational and algebraic tools to quantify the total costs (gas, maintenance/repairs, purchase price) for each scenario over the three years.
Round your answers to the nearest dollar.
Scenario
Total Cost for Three Years
Keep the old car
$
Number
Buy the fuel-efficient used car
$
Number
Step 4: Make an Informed Decision
Based on the information presented what do think Manny should decide?
Option #1: Keep the old car
Option #2: Buy the fuel-efficient used car
Option #
1
Step 5: Evaluate Your Reasoning
Manny plans to start looking at cars and will evaluate his reasoning before he makes a purchase.
( need help on the assignment)
5. The Smiths took out a $155,500, 30-year mortgage. The
monthly payment was $992. What will be their total interest
charges after 30 years?
Question 6
3 pts
Answer:
$176420
Step-by-step explanation:
Monthly payment = $992
Yearly payment = 992 × 12 = $11064
Total payment = 11064 × 30 = $331920
Interest = 331920 - 155500 = $176420. The interest seems too much, are you sure there's no mistake in the question? Maybe the monthly payment is more than what you've written here?
Can anyone help me answer this question?
1. What is the derivative of sin(x)cos(x)?
2. What is the derivative of sin2(x)cos2(x)?
Answer:
cos 2x
f(x)=4•sin(x)•cos(x)
Step-by-step explanation:
A catering service offers 5 appetizers, 11 main courses, and 4 desserts. A customer is to select 4 appetizers, 9 main courses, and 3 desserts for a banquet. In how many ways can this be done?
There are 1100 many ways can be done that is when catering service offers 5 appetizers, 11 main courses, and 4 desserts.
Given that,
A catering service offers 5 appetizers, 11 main courses, and 4 desserts. A customer is to select 4 appetizers, 9 main courses, and 3 desserts for a banquet.
We have to find how many ways can this be done.
We know that,
Number of appetizers offered = 5
Number of appetizers customer is to select = 4
Number of main courses offered = 11
Number of main courses customer is to select = 9
Number of desserts offered = 4
Number of desserts the customer is to select = 3
So,
To determine the number of ways this can be selected,
By using the combination formula that is
[tex]^nC_r = \frac{n!}{r!(n-r)!}[/tex]
[tex]^nC_r = ^5C_4\times ^{11}C_9\times^4C_3[/tex]
[tex]^5C_4\times ^{11}C_9\times^4C_3 = \frac{5!}{4!(5-4)!} \times \frac{11!}{9!(11-9)!}\times \frac{4!}{3!(4-3)!}[/tex]
[tex]^5C_4\times ^{11}C_9\times^4C_3 = \frac{5!}{4!1!} \times \frac{11!}{9!2!}\times \frac{4!}{3!1!}[/tex]
[tex]^5C_4\times ^{11}C_9\times^4C_3 = \frac{5!}{4!} \times \frac{11!}{9!(2)}\times \frac{4!}{3!}[/tex]
[tex]^5C_4\times ^{11}C_9\times^4C_3 =[/tex] 5 × 11 × 5 × 4
[tex]^5C_4\times ^{11}C_9\times^4C_3 =[/tex] 1100
Therefore, There are 1100 many ways this can be done.
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If y varies directly as x, and y= 2 when x = 3, find y when x = 1.
a. y = 2x; y(1)=2
C.
b.
3
A
B
C
D
(1)
2
d.
4
3; P(1) - 4
3
-
2
y = x; y(1) -
3
Please select the best answer from the choices provided
2/
3
Answer:
Step-by-step explanation:
If y varies directly as x, it means that y is directly proportional to x, and we can express this relationship using a proportionality constant k:
y = kx
To find the value of k, we can use the given information that y = 2 when x = 3:
2 = k(3)
Solving for k, we get:
k = 2/3
Now that we know the value of k, we can use the formula to find y when x = 1:
y = (2/3)x
y = (2/3)(1)
y = 2/3
Therefore, when x = 1, y = 2/3.
Johnny's cafe serves desserts. One serving of ice cream and two servings of blueberry pie provides 790 calories. Three servings of ice cream and two serving of blueberry pie provides 1290 calories
The caloric content for ice cream C is 250 calories while the caloric content for ice cream B is 270 calories.
How to determine the caloric contentTo determine the caloric content, we will assign algebraic notations to each of the dessert types.
1 Icecream + 2 Blueberry pie = 790 calories
3 icecream + 2 Blueberry pie = 1290 calories
Now the first equation will be subtracted from the second equation as follows:
2 icecream = 500 calories
So, 1 ice cream is 250 calories.
Also, since, 1 icecream serving equals 250 calories, 2 Blueberry pies = 790 - 250 = 540 calories, and 1 Blueberry pie equals 270 calories.
Complete question:
Johnny's cafe serves desserts. One serving of ice cream and two servings of blueberry pie provides 790 calories. Three servings of ice cream and two servings of blueberry pie provides 1290 calories. Find the caloric content of each item.
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write 15 dollars and 95 cents as a mixed number (and then reduce)
Answer:
15 19/20
Step-by-step explanation:
95 cents means 95/100 then reduce that and you get 19/20 and then on the end you still have the $15
Answer pls my state test is cominggggg
(-3/4) x (3/4)
---When we multiply fractions, we multiply horizontally/across
(-3 x 3) / (4 x 4)
-9 / 16
Answer: -9/16
Hope this helps!
A sequence can be generated using an + 1 = –0.25 + an, where a1 = 5 and n is a whole number greater than 1.
What are the first 5 terms in the sequence?
The first 5 terms in the sequence are 5, 4.75, 4.5, 4.25 and 4
What are the first 5 terms in the sequence?From the question, we have the following parameters that can be used in our computation:
Sequence generated using an + 1 = –0.25 + ana1 = 5n is a whole number greater than 1.Using the above as a guide, we have the following:
a2 = -0.25 + a1
So, we have
a2 = -0.25 + 5 = 4.75
For other terms. we have
a3 = -0.25 + 4.75 = 4.50
a4 = -0.25 + 4.50 = 4.25
a5 = -0.25 + 4.25 = 4.0
Hence, the first 5 terms in the sequence are 5, 4.75, 4.5, 4.25 and 4
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What is the equation of the line that passes through the point ( 4 , 0 ) and has a slope of − 2?
Step-by-step explanation:
y=m(x-x1)+y1
y=-2(x-4)+0
y=2x-8+0
y=2x-8
Select the correct answer.
Mary is buying several items that cost $128.25 total. She is using a store coupon for 35% off her purchases. She has to pay 4% sales tax. Calculate the total cost of the items.
A.
$80.03
B.
$83.36
C.
$86.70
The total cost of the several items that originally cost $128.25 with a coupon for 35% off and sales tax of 4% is C. $86.70.
How the total cost is determined:The original cost is discounted by 35% using a discount factor of 0.65 and increased by a sales tax factor of 1.04.
After the multiplications, the product shows the total cost that Mary incurred for buying the items.
Original cost of several items Mary is buying = $128.25
Coupon discount = 35%
Discount factor = 0.65 (100 - 35)
Sales tax rate = 4%
Sales tax factor = 1.04 (100 + 4)
The total cost of the items = $86.70($128.25 x 0.65 x 1.04)
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how much money does she make all together in one week
needs more explanation
help please Use inductive reasoning to predict the next number in this pattern: 3, 13, 22, 30, 37, 43…
A) 5
B) 48
C) 14
D) 50
Answer:
B) 48
Step-by-step explanation:
3, 13, 22, 30, 37, 43…
3 to 13 is +10
13 to 22 is +9
22 to 30 is +8
We are adding one less each time
3, 13 , 22, 30, 37, 43 …
+10 +9 +8 +7 +6 +5
Add 5 to 43
43+5 = 48
College Level Trig Question Please Help!
The solution of the trigonometric problem is y = -3
How is this so ?Starting with the equation
3/2 cos^-1(y/6) = pi
First, we can simplify by dividing both sides by 3/2 ....
cos^-1(y/6) = pi / (3/2)
cos^- 1(y/6) = 2pi / 3
Next, we can take the cosine of both sides to get...
cos (cos^-1(y/6 ) )
= cos( 2pi/3)
y/6 = -1/2
y = -3
Therefore, the exact solution to the equation 3/2 cos^-1(y/6) = pi is y = -3.
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Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
n = 109, x = 65; 88% confidence
Rounding to three decimal places, the confidence interval is (0.419, 0.574).
How can a confidence interval for a sample proportion be created?The sample proportion, p′ = 0.842, which is the point estimate of the population proportion, must be determined in order to calculate the confidence interval. Given that CL = 0.95 is the requested confidence level, = 1 - CL = 1 - 0.95 = 0.05 ( 2) ( 2) = 0.025.
Confidence interval=proportion±margin of error
CI = p ± ME
The proportion is:
p = x / n
p = 55/110
p = 0.5
Margin of error=critical value × standard error
ME = CV × SE
n > 30, so we can approximate CV with a normal distribution.
At P=88%, CV=1.55.
SE = √(pq / n)
SE = √(0.5 (1−0.5)/110)
SE = 0.048
So the margin of error is:
ME = 1.55 × 0.048
ME = 0.074
So the confidence interval is:
CI = 0.5 ± 0.074
CI = (0.426, 0.574)
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Question:
Use the given degree of confidence and Sample data to construct income confidence interval for the population proportion p. n=110, x=55; 88% confidence
A) 0.426 B)0.442 C)0.425 D)0.421
Two coins are tossed. Assume that each event is equally likely to occur.
a) Use the counting principle to determine the number of sample points in the sample space.
b) Construct a tree diagram and list the sample space.
c) Determine the probability that no tails are tossed.
d) Determine the probability that exactly one tail is tossed.
e) Determine the probability that two tails are tossed.
f) Determine the probability that at least one tail is tossed.
Question content area bottom
Part 1
a) There is/are ______sample point(s) in the sample space.
a) There are 2 x 2 = 4 sample points in the sample space
How to solve
b) Tree Diagram
O D.\nH\nHe\nT\nH\nT\n
Sample space: D. HH, HT, TH, TT
c) P(no tails) = P(HH)
= 1/4
d) P(exactly one tail) = P(HT, TH)
= 2/4
= 1/2
e) P(2 tails) = P(TT)
= 1/4
f) P(at least one tail) = P(HT, TH, TT)
= 3/4
In mathematics, tree diagrams are often used in probability and statistics to show all the possible outcomes of an event. In computer science, they are used to represent the hierarchical structure of files and directories in a file system
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Write null and alternative hypothesis, test statics, p-value, and inference.
For Climate Change Beliefs, use variables: climate change and certainty.
For Class time use, use variables: income class, and sleeping.
The value of null and alternative hypothesis are change beliefs and certainty test statics, p-value, and inference are the null hypothesis and conclude that there is insufficient evidence to suggest a significant relationship.
Climate Change Beliefs:
Null Hypothesis (H0): There is no significant relationship between climate change beliefs and certainty.
Alternative Hypothesis (Ha): There is a significant relationship between climate change beliefs and certainty.
Test Statistic: Pearson's correlation coefficient (r)
The Pearson correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, we will use it to determine the relationship between climate change beliefs and certainty.
P-Value: The p-value is the probability of obtaining a test statistic as extreme as the observed value, assuming that the null hypothesis is true.
Inference: If the p-value is less than the significance level (usually 0.05), we reject the null hypothesis and conclude that there is a significant relationship between climate change beliefs and certainty. If the p-value is greater than the significance level, we fail to reject the null hypothesis and conclude that there is insufficient evidence to suggest a significant relationship.
Class Time Use:
Null Hypothesis (H0): There is no significant relationship between class time use, income class, and sleeping.
Alternative Hypothesis (Ha): There is a significant relationship between class time use, income class, and sleeping.
Test Statistic: Multiple regression analysis
Multiple regression analysis is used to determine the relationship between a dependent variable and two or more independent variables. In this case, class time use, income class, and sleeping will be the independent variables, and we will use it to determine the relationship with the dependent variable.
P-Value: The p-value is the probability of obtaining a test statistic as extreme as the observed value, assuming that the null hypothesis is true.
Inference: If the p-value is less than the significance level (usually 0.05), we reject the null hypothesis and conclude that there is a significant relationship between class time use, income class, and sleeping.
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What are the values of x
X =
The product of the two external segments and the sum of the lengths of each segment in the circle are equal if two secants are drawn to the circle from a single shared exterior point. The x has a value of 2 units.
What is intersecting secants theorem?If two secant segments are drawn to a circle from an exterior point, the product of the measurements of one secant segment and its external secant segment is equal to the product of the measurements of the second secant segment and its external secant segment.
So, we know that:
BE * AE = CE * DE
Now, insert the values as follows:
(x+1) * (x+12) = (x+4) * (x+5)
x² + x + 12x + 12 = x² + 4x + 5x + 20
13x + 12 = 9x + 20
4x = 8x
x= 2
Then: x = 2 units
Therefore, the product of the two external segments and the sum of the lengths of each segment in the circle are equal if two secants are drawn to the circle from a single shared exterior point. The x has a value of 2 units.
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