The absolute value of x can be written in the form
x-(1/2)x=0 or |x| = (1/2)x
To write the absolute value in the form x-b=c where b is a number and c can be either a number or expression, you can use the following steps:
1. Start with the absolute value expression: |x|
2. Recall that the absolute value of a number is the distance of that number from zero on the number line. So, we can rewrite |x| as the distance between x and 0 on the number line.
3. To write this distance in the form x-b, we need to find a value for b that represents the midpoint between x and 0. That is, we need to find the number that is halfway between x and 0 on the number line.
4. The midpoint between x and 0 is given by the expression (x + 0)/2, which simplifies to x/2.
5. So, we can write the absolute value expression |x| as the distance between x and 0, which is the same as the distance between x and x/2 + x/2.
6. Simplifying this expression, we get:
|x| = |x - x/2 - x/2|
7. Rearranging terms, we get:
|x| = |(1/2)x - (1/2)x|
8. Finally, we can write the absolute value in the form x-b=c by setting b = (1/2)x and c = 0, which gives us:
|x| = |x - (1/2)x - 0| = |(1/2)x - 0|
So, the absolute value of x can be written in the form x-(1/2)x=0, or in other words:
|x| = (1/2)x
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Which shapes contain at least one obtuse angle?
Select each correct answer.
Responses are the pictures
Answer:
Shape 1 and Shape 3
Step-by-step explanation:
An obtuse angle is an angle that is greater than 90° but less than 180°.
We can see that the first shape has 2 angles that are greater than 90°, making this a correct choice.
The second shape has 4 boxes, meaning the angles are exactly 90°, making this incorrect.
The third shape has 6 angles that are greater than 90°, making this another correct choice.
The last shape has all 3 angles under 90°, making this also incorrect.
So, the 1st and 3rd shapes are correct.
Hope this helps! :)
How can you use rational expressions and equations to describe relationship and solve problems?
Rational expressions and equations can be used to describe relationships and solve problems that involve proportions or rates of change.
They involve expressions that are fractions of polynomials, where the numerator and denominator can be thought of as values that change according to some variable.
For example, rational expressions can be used to represent rates of change in physics or finance, such as the speed of an object or the interest rate on a loan. By setting up equations with rational expressions, we can solve for unknown values or relationships between variables.
Rational equations can also be used to describe relationships between quantities that are proportional, such as the volume of a container and the amount of liquid it can hold. By solving for an unknown variable in a rational equation, we can determine the relationship between the two quantities and use it to make predictions or solve practical problems.
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40% of a smoothie from Blender Splendor is fruit juice. There are 20 ounces in a smoothie. How many ounces of fruit juice does a smoothie have?
A 20-ounce smoothie from Blender Splendor contains 8 ounces of fruit juice.
To find out how many ounces of fruit juice are in a 20-ounce smoothie from Blender Splendor, given that 40% of the smoothie is fruit juice, follow these steps:
1. Convert the percentage to a decimal: 40% = 0.40
2. Multiply the total ounces of the smoothie by the decimal: 20 ounces * 0.40 = 8 ounces
Your answer: A 20-ounce smoothie from Blender Splendor contains 8 ounces of fruit juice.
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Victoria drove 76 miles, burning 4 gallons of gasoline. She knows the total number of miles she can drive is proportional to the number of gallons of gas she burns and wants to create an equation that can be used to predict the number of miles she can drive for any number of gallons of gas used. Drag the correct values to create an equation which will accurately represent the total number of miles, m, Victoria should expect to be able to drive if she uses g gallons of gasoline
The equation that represents the total number of miles, m, Victoria should expect to be able to drive if she uses g gallons of gasoline is m = (19g).
We can determine the proportionality constant by dividing the total number of miles driven (76) by the number of gallons of gasoline burned (4), which gives us 19 miles per gallon (76/4 = 19).
We can then use this proportionality constant to create the equation m = (19g), where m represents the total number of miles Victoria should expect to be able to drive if she uses g gallons of gasoline. This equation tells us that for every additional gallon of gasoline burned, Victoria should expect to be able to drive an additional 19 miles.
For example, if Victoria were to burn 6 gallons of gasoline, she should expect to be able to drive 114 miles (6 x 19 = 114). This equation assumes that Victoria's car has a constant fuel efficiency of 19 miles per gallon.
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Pythagorean Theorem answer quick please
Answer:
3.9
Step-by-step explanation:
pythagorean theorem states:
[tex]a^{2} +b^{2} =c^{2}[/tex]
We know that a is the height of the triangle, 2.
We also know that b is the base of the triangle, 3.
So, solve for c:
2²+3²=c²
simplify
4+9=c²
15=c²
take the square root of both sides
c=3.9
So, the spider and the fly are 3.9 ft apart from each other
Hope this helps :)
Answer:
3.6 feet
Step-by-step explanation:
The Pythagorean theorem states that a^2+b^2=c^2, where c is the hypotenuse, or longest side of the triangle opposite to the right angle, and a and b are the two legs of the triangle (the other two sides.)
In the question, sides a and b are given as 2ft and 3ft long. Plugging 2 and 3 into the equation, we will get that 2^2+3^2=c^2. 2 x 2 = 4 and 3 x 3 = 9, so 4 + 9 = c^2, or, c^2 = 13.
However, this is still c^2, not c, so we must take the square root of both sides. This is because the equation is now essentially saying that c x c = 13, so if we find a number that when multiplied by itself equals 13, that number will be c. to do this, we must take the square root of 13. This will give us an irrational number- approximately 3.605551275. The question asks to round it to the nearest tenth though, so this will simply become 3.6.
In the context of this question, it means that the spider and the fly are 3.6ft apart.
Find the inverse of the function
The inverse of the function f(x) = √(x+1) is [tex]f^-1[/tex](x) = x² - 1.
What is inverse function?Given a function f(x), its inverse function, denoted as [tex]f^-1[/tex](x), is a function that takes the output of f(x) and returns the original input. In other words, if y = f(x), then x = [tex]f^-1[/tex](y).
According to question:To find the inverse of the function f(x), we follow these steps:
Step 1: Replace f(x) with y:
y = √(x+1)
Step 2: Interchange x and y:
x = √(y+1)
Step 3: Solve for y:
x² = y+1
y = x² - 1
Step 4: Replace y with f^-1(x):
f^-1(x) = x² - 1
Therefore, the inverse of the function f(x) = √(x+1) is [tex]f^-1[/tex](x) = x² - 1.
To verify this, we can check that ([tex]f^-1[/tex] o f)(x) = x and (f o [tex]f^-1[/tex])(x) = x for all x in the domain of the functions:
([tex]f^-1[/tex] o f)(x) = [tex]f^-1[/tex](f(x)) = (√(x+1))² - 1 = x
(f o [tex]f^-1[/tex])(x) = f([tex]f^-1[/tex](x)) = √((x² - 1) + 1) = √(x²) = |x| + 1
Since the range of f(x) is [0, infinity), we restrict the domain of [tex]f^-1[/tex](x) to [1, infinity) to ensure that the inverse is a function.
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For what values of a and b will this equation have infinitely many solutions?
5(x + 3) = a(x + 4) + 3x + b
Answer: To have infinitely many solutions, the equation must be true for all values of x. In other words, the left side and right side of the equation must be equivalent, meaning that the coefficients of x on both sides of the equation must be equal, and the constant terms on both sides must be equal.
We can simplify the given equation as follows:
5(x + 3) = a(x + 4) + 3x + b
5x + 15 = ax + 4a + 3x + b
Simplifying further, we get:
8x + 4a + b = 5x + 15
Rearranging terms, we get:
3x + 4a + b - 15 = 0
For this equation to have infinitely many solutions, the coefficients of x on both sides must be equal to zero, meaning that:
3 = 0
This is not possible, so the equation cannot have infinitely many solutions for any values of a and b.
Therefore, there are no values of a and b for which the given equation will have infinitely many solutions.
Four tangents are drawn from E to two concentric circles A, B, C, and D are the points of tangency. 1. Name as many pairs of congruent triangles as possible 2. Tell how you can show each pair is congruent
1. Congruent triangles:
a) Triangle EAB and Triangle ECD
b) Triangle EAC and Triangle EBD
2. Triangle EAB ≅ Triangle ECD and Triangle EAC ≅ Triangle EBD by ASA Congruence Postulate.
In this scenario, we have two concentric circles and four tangents drawn from point E to these circles, creating points of tangency A, B, C, and D.
1. Pairs of congruent triangles:
a) Triangle EAB and Triangle ECD
b) Triangle EAC and Triangle EBD
2. Showing congruence for each pair:
a) To show that Triangle EAB and Triangle ECD are congruent, we can use the following information:
- EA and EC are both radii of the larger circle, so EA = EC (congruent radii).
- AB and CD are tangents to the smaller circle, so the segments are parallel and form corresponding angles at points A and C. Thus, Angle EAB and Angle ECD are congruent (alternate interior angles).
- EB and ED are both radii of the smaller circle, so EB = ED (congruent radii).
With this information, we can prove Triangle EAB ≅ Triangle ECD using the Angle-Side-Angle (ASA) Congruence Postulate.
b) To show that Triangle EAC and Triangle EBD are congruent, we can use the following information:
- EA and EB are both radii of the larger circle, so EA = EB (congruent radii).
- AC and BD are tangents to the larger circle, so the segments are parallel and form corresponding angles at points A and B. Thus, Angle EAC and Angle EBD are congruent (alternate interior angles).
- EC and ED are both radii of the smaller circle, so EC = ED (congruent radii).
With this information, we can prove Triangle EAC ≅ Triangle EBD using the Angle-Side-Angle (ASA) Congruence Postulate.
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What’s the answer? I need help please
Answer:
-√3/2
Step-by-step explanation:
sin(x) is equal to 1/2 when x=7π/6 or 11π/6
cos(7π/6) = -√3/2
cos(11π/6) = √3/2
In the question, it says that cos(x) is <0, which means that it has to be negative
So, the answer is -√3/2
Answer: C
Step-by-step explanation:
Think of a unit circle
sin x = -1/2 happens at 7[tex]\pi[/tex]/6 and 11[tex]\pi[/tex]/6, 3rd and 4th quadrant
Out of those 2 quadrants cos x is negative in the 3rd quadrant
So cos x= -√3/2
the manager at the yellow rose diner needs to purchase silverware for the restaurant. the silverware cost $230 and the manager placed an order for silverware in a state with a sales tax of 6.5%
The manager will need to pay $244.95 to purchase the silverware, including sales tax.
What is decimal?
Decimals are numbers that have two parts: a whole number part and a fractional part separated by a decimal point.
According to the given information:
If the silverware costs $230 and the sales tax is 6.5%, we need to calculate the amount of tax that will be added to the cost of the silverware:
Tax = 6.5% of $230 = 0.065 x $230 = $14.95
So the total cost of the silverware including tax is:
$230 + $14.95 = $244.95
Therefore, the manager will need to pay $244.95 to purchase the silverware, including sales tax.
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If the ratio of ambers miniature house to the original structure is 2:35 and the miniature requires 4 square feet of flooring how much flooring exists in the original house
The original house has 70 square feet of flooring.
If the ratio of the miniature house to the original structure is 2:35, then we can say that the miniature house is 2/35th the size of the original house in terms of floor area. Let's assume that the original house has x square feet of flooring. Then, we can set up a proportion based on the ratios:
2/35 = 4/x
Solving for x, we get:
x = 70
Therefore if the ratio of ambers miniature house to the original structure is 2:35 and the miniature requires 4 square feet of the flooring then original house has 70 square feet of flooring.
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consider the first month's sales data for the south region.
select the correct answer from each drop-down menu.
for the south region, the proportion of sales from current stores is approximately______ %.
a.63
b.37
c.58
d.24
because this proportion is_________
a. relatively close to
b. significantly different from
the sales director's statistical model, the data is______
a. inconsistent
b. consistent
with the model.
Answer is:
For the south region, the proportion of sales from current stores is approximately 58 %.
because this proportion is relatively close to the sales director's statistical model, the data is consistent with the model.
The given information states that the proportion of sales from current stores in the South region is approximately 58%. This value falls within the range of the sales director's statistical model, which could be an estimated value or a range of values based on past data or other sources. Since the proportion of sales falls within the expected range, the data is consistent with the model. This means that the actual value observed is not significantly different from the expected value, and there is no evidence to suggest that the model needs to be revised or updated.
Therefore, the answer to the second drop-down menu is "consistent". If the actual proportion of sales from current stores in the South region was significantly different from the expected value in the sales director's statistical model, then the answer would be "inconsistent". However, since the observed proportion is relatively close to the expected value, the data is consistent with the model.
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please help...................
. c) gordon has 4 cups of powdered sugar. he sprinkles 1/2 of the sugar onto a plate of lemon bars and the rest onto a plate of cookies. how much sugar does he sprinkle on the cookies?
Gordon sprinkles 2 cups of powdered sugar onto the plate of cookies after he sprinkles 1/2 of the sugar, or 2 cups, onto the plate of lemon bars.
Gordon has 4 cups of powdered sugar. He sprinkles 1/2 of the sugar onto a plate of lemon bars and the rest onto a plate of cookies. We want to find out how much sugar he sprinkles on the cookies.
If Gordon sprinkles 1/2 of the sugar onto the plate of lemon bars, he uses 1/2 x 4 = 2 cups of powdered sugar for the lemon bars.
This leaves him with 4 - 2 = 2 cups of powdered sugar remaining for the plate of cookies.
Therefore, Gordon sprinkles 2 cups of powdered sugar onto the plate of cookies.
We can also verify this answer by using subtraction. If Gordon uses 2 cups of powdered sugar for the lemon bars, he has 4 - 2 = 2 cups of powdered sugar remaining. This means that he must have used the remaining 2 cups of powdered sugar for the plate of cookies.
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Rewrite the expression using a single, positive exponent: 14^-3·14^12
Answer:
It's 14⁹.
Add the powers in the process of multiplying.
Which is -3 + 12 answer is 9.
Hope this helped!
Statistics from Cornell's Northeast regional Climate Center indicate that Ithaca, NY, gets an average of 36. 1 inches of rain each year with a
standard deviation of 5. 2 inches,
My friend stayed in Ithaca, NY there for 10 years, she said that the average while she was there was less than 34 inches. What is her vscore for
the 10 years?
(Round to the thousandth place) (Use a Standard Deviation that is rounded to the thousandth place)
Rounded to the thousandth place, your friend's z-score for the 10 years is approximately -0.404.
To calculate your friend's z-score for the 10 years she stayed in Ithaca, NY, you can use the following formula:
z = (X - μ) / σ
where:
- z is the z-score
- X is the sample mean (in this case, 34 inches)
- μ is the population mean (in this case, 36.1 inches)
- σ is the standard deviation of the population (in this case, 5.2 inches, rounded to 5.200 for thousandth place)
Plugging in the values:
z = (34 - 36.1) / 5.200
z = -2.1 / 5.200
z = -0.404
Therefore, your friend's z-score for the 10 years is approximately -0.404, rounded to the thousandth place.
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a man in a plane is looking down at a building below. if the man is 40,000 feet away from the building and the altitude of the man is 33,000 feel what is the angle of depression from the man to the building below
The angle of depression from the man to the building below is approximately 39.81°.
To find the angle of depression from the man to the building below, we'll use the tangent function and the given information.
Given:
- The man is 40,000 feet away from the building horizontally.
- The man's altitude is 33,000 feet.
Step 1: Identify the opposite and adjacent sides in relation to the angle of depression.
- The opposite side is the altitude (33,000 feet).
- The adjacent side is the horizontal distance (40,000 feet).
Step 2: Use the tangent function to find the angle of depression.
tan(angle) = opposite/adjacent
tan(angle) = 33,000/40,000
Step 3: Find the inverse tangent of the ratio to get the angle.
angle = arctan(33,000/40,000)
Step 4: Calculate the angle.
angle ≈ 39.81°
The angle of depression from the man to the building below is approximately 39.81°.
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Find the surface area of the net below in square centimeter 12,9,9
can someone help? asking for a friend (literally) I’d really appreciate it!
The graphs of the sinusoidal function for the question 1 to 4 created with MS Excel are attached
5. The function is; y = cos(θ) + 2
6. The function is; y = sin(2·θ) - 4
What is a sinusoidal function?A sinusoidal function is a smooth periodic or repetitive function based on the sine or cosine of an angle.
The equations for the graphs in the sinusoidal function indicates that we get;
The period = 2·π/B
The horizontal shift = -C/B
The vertical shift = D
Where;
B = The coefficient of the angle, θ
C = The constant within the parenthesis
D = The constant term outside the sine or cosine function parenthesis
1. y = 2·sin(2·θ + 1)
The function indicates that the amplitude is 2, the period is 2·π/2 = π, the vertical shift is 0, and the horizontal shift is -1/2
Please find attached the graph of the function, created with MS Excel
2. y = -cos(θ) - 2
The amplitude is 1
The period is 2·π
The horizontal shift is 0
The vertical shift is -2
Please find attached the graph of the function y = -cos(θ) - 2, created with ms Excel
3. y = 4·cos(3·θ -2)
The amplitude is 4
The period is 2·π/3
The horizontal shift is 0
The vertical shift is -2
Please find attached the graph of the function y = 4·cos(3·θ -2), created with MS Excel
4. y = 3·sin(6·θ) - 1
The amplitude is 3
The period is π/3
The horizontal shift is 0
The vertical shift is -1
Please find attached the graph of the function y = 3·sin(6·θ) - 1, created with MS Excel
5. The points on the graph are;
Peak; (0, 3)
The next adjacent trough; (180, 1)
The adjacent peak; (360, 3)
Therefore;
The amplitude is 1
The period is 360°
The horizontal shift is 2
The vertical shift is 0
The peak point at θ = 0, indicates;
The function is; y = cos(θ) + 2
6. The points on the graph are;
Peak; (45, -3)
The next adjacent trough; (135, -5)
The adjacent peak; (225, -3)
Therefore;
The amplitude is 1
The period is 180 = π radians
The horizontal shift is 0
The vertical shift is -4
The function is; y = sin(2·θ) - 4
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if it's 9:45 am what time would it be in 9 hours?
Answer:
6:45pm
Step-by-step explanation:
Given: The time is currently 9:45am
To find: The time in 9 hours
To do this, we have to add 9 hours to 9:45am.
9:45am+9 hours=
6:45pm
Hope this helps! :)
Find the measure of angle D.
Answer:
Step-by-step explanation:
3x4
The table shows the number of turkey and ham sandwiches sold by Derby’s Deli for several days in one week Sandwiches Sold at Derby’s Deli Day Turkey Ham Monday 7 9 Tuesday 13 11 Wednesday 8 8 Thursday 15 6 Friday 12 16 What is the difference between the median number of turkey sandwiches sold and the median number of ham sandwiches sold?
The difference between the median number of turkey sandwiches sold and the median number of ham sandwiches sold is 3.
First, let's find the median number of turkey and ham sandwiches sold.
To find the median:
1. Arrange the data in ascending order.
2. If there's an odd number of data points, the median is the middle value. If there's an even number of data points, the median is the average of the two middle values.
Turkey sandwiches sold: 7, 8, 12, 13, 15
Ham sandwiches sold: 6, 8, 9, 11, 16
Now let's find the medians:
Turkey median: There are 5 data points, which is odd, so the median is the middle value, 12.
Ham median: There are 5 data points, which is odd, so the median is the middle value, 9.
Finally, let's find the difference between the medians:
Difference = Turkey median - Ham median
Difference = 12 - 9
Difference = 3
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Determine whether each situation can have only one value for the variable or more than one value for the variable.
select only one or more than one for each situation.
the total cost to buy t movie tickets for $8.50 each
o only one
more than one
the number of ounces of tomato juice, j, in 2 quarts
o only one
o more than one
the number of pizzas to order, p, if each person eats 2 slices
only one
more than one
the greatest number of $6 notebooks, n, ed can buy with $36
only one
0. more than one
the area, a, of a wall with a length of 5 meters and a height of 3 meters
o only one
o more than one
The total cost to buy t movie tickets for $8.50 each is o only one, the number of ounces of tomato juice, j, in 2 quarts o only one, the number of pizzas to order, p, if each person eats 2 slices more than one, the greatest number of $6 notebooks, n, ed can buy with $36 only one, and the area, a, of a wall with a length of 5 meters and a height of 3 meters o only one.
1. The total cost to buy t movie tickets for $8.50 each:
- Only one value for the variable
The cost to buy a specific number of movie tickets at a fixed price will have only one total cost value.
2. The number of ounces of tomato juice, j, in 2 quarts:
- Only one value for the variable
There are 32 ounces in a quart, so 2 quarts will always have 64 ounces.
3. The number of pizzas to order, p, if each person eats 2 slices:
- More than one value for the variable
The number of pizzas needed depends on the number of people attending, which can vary, leading to different values for p.
4. The greatest number of $6 notebooks, n, Ed can buy with $36:
- Only one value for the variable
Since each notebook costs $6, Ed can buy exactly 6 notebooks with $36 (36/6 = 6).
5. The area, a, of a wall with a length of 5 meters and a height of 3 meters:
- Only one value for the variable
The area of a rectangle is calculated by multiplying its length and height. In this case, the area will always be 15 square meters (5m x 3m = 15m²).
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A study was conducted by the Director of Parking and Transportation at a large university. One variable under study is the method of transportation to campus used by off-campus students. The choices for students on the survey were drive alone, carpool, public transportation, walk, or a paid driving service. Which type of variable is this?
The type of variable being studied in this case is a categorical variable, specifically a nominal variable.
What s the type of variable in the question?Categorical variables are variables that can be classified or grouped. The categories in this example are the various modes of transportation utilized by off-campus students (drive alone, carpool, public transportation, walk, or a paid driving service).
Nominal variables are categorical variables with no intrinsic order or numerical value. Because the various modes of transportation in this study have no numerical value or inherent order, they are classified as nominal variables.
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La familia de una de tus compañeras, que disponía de un terreno con 7 lotes colindantes, y se vieron en la necesidad de venderlos. Establecieron un precio por metro cuadrado de 800 pesos y tienen que calcular el costo, con base en los metros cuadrados que tiene cada lote. Determina el área de cada terreno, así como su precio
The area and cost of each of the lots is given below
What is the area?The area and cost of each of the lots is calculated below
To calculate the rectangle trapezoid, it will be:
B = 140m
h = 50m
b = 70m
Note that Area of Lot 1 : A =(B+b)h/2
Hence Height will be:
A= (140m+ 70m) 50m/2
A = 5250 m²
Cost: C = 5250m² *800 pesos = $4,200,000
Lot 2 is another rectangle trapezoid:
B = 150m
b = 80m
h = 50m
Area: A= (150m+ 80m)50m/2
A = 5750 m²
Cost: C = 5750m² x 800 pesos = $4,600,000
So, for Lot 3 which is a rectangle:
b = 70m
to = 50m
Area: A =a x b
W=50m x 70m
A = 3500 m²
Cost: C = 3500m² x 800 pesos = $2,800,000
Lot 4 is a right triangle:
b = 70m
h = 50m
Area: A =b x h/2
A= (50m x 70m)/2
A = 1750 m²
Cost: C = 1750 m² x 800 pesos = $1,400,000
So for Lot 5 that is a rhomboid:
b = 150 base meters
h=50m
Area: A=b x h
A= (150m x 50m
H = 7500 m²
Cost: C = 7500m² x 800 pesos = $6,000,000
So, for Lot 6 that is an isosceles triangle:
b = 140m
h= 50m
Area: A =b x h/2
A= (140m x 50m)/2
A = 3500 m²
Lastly, the Cost: C = 3500m² x 800 pesos = $2,800,000
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See transcribed text below
The family of one of your colleagues, who had a piece of land with 7 adjoining lots, and they found themselves in need of selling them. They established a price per square meter of 800 pesos and they have to calculate the cost, based on the square meters that each lot has. Before continuing, review the terrain sketch and answer the questions
What is the area and cost of each of the lots?
Morgan bought a sofa for $216. 0. the finance charge was $25 and she paid for it over 15 months.
use the formula approrimate apr =
(finance charge: #months)(12)
amount financed
to calculate her approximate apr
round the answer to the nearest tenth.
The approximate APR for Morgan's sofa purchase is 1.7%.
To calculate the approximate APR (Annual Percentage Rate) for Morgan's sofa purchase, we can use the formula:
APR ≈ (finance charge / # of months) x 12 / amount financed
Here, the finance charge is $25, the number of months is 15, and the amount financed is the total cost of the sofa minus the finance charge, which is:
financed= $216.00 - $25.00 = $191.00
on substitution:
APR ≈ (25 / 15) x 12 / 191
APR ≈ 0.2778 x 0.06283
APR ≈ 0.01743
Rounding the answer to the nearest tenth, we get:
APR ≈ 1.7%
Therefore, the approximate APR for Morgan's sofa purchase is 1.7%.
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You and a group of friends want to know how many students in your school prefer rap music. There are 440 students in your school. Each person in the group randomly surveys 20 students. The table shows the results.
A. Use each sample to make and estimate for the number of students in your school who prefer rap music
B. Describe the center and variation of the estimates
The survey results show that the estimates for the number of students in the school who prefer rap music range from 110 to 154. The center of the estimates is around 121, with a variation of about 66.
To estimate the number of students who prefer rap music, multiply the proportion who prefer rap in each sample by the total number of students in the school (440)
Sample 1: 0.25 x 440 = 110
Sample 2: 0.20 x 440 = 88
Sample 3: 0.30 x 440 = 132
Sample 4: 0.35 x 440 = 154
The center of the estimates is the average of the four estimates: (110 + 88 + 132 + 154) / 4 = 121. Variability can be described using the range (154 - 88 = 66) or the standard deviation of the estimates, which requires additional calculations.
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The town of Knappville has a landmark, L, an amusement park, AP, a high school, HS, a city hall, CH, and a city park, P. Herberto is at the amusement park and wants to go to the city hall. Name a path he could travel
Herberto travelled through Amusement Park (AP), City Park (P), Landmark (L), High School (HS), City Hall (CH).
Herberto can take the following path to travel from the amusement park (AP) to the city hall (CH):
Amusement Park (AP) -> City Park (P) -> Landmark (L) -> High School (HS) -> City Hall (CH)
This path takes him through the city park, then to the landmark, followed by the high school, and finally to the city hall.
Please note that without a specific map or layout of Knappville, there could be multiple valid paths from the amusement park to the city hall. The path provided above is just one example.
When Herberto travels from the amusement park to the city hall, he can choose various paths depending on the specific layout of Knappville. The path mentioned earlier is just one example, but the actual paths could differ based on the town's infrastructure and the locations of the landmarks.
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Which coordinates below form a rectangle that is a translation of the rectangle
shown above?
A(0, 3), (0, 9), (5, 3), (5,9)
B(0, 0), (0, 3), (5, 0), (5, 3)
C(0, 0), (4,0), (0, 4)
D(7, 0), (7, 3), (12, 0), (12, 3)
State the number of complex zeros and the possible rational zeros for the function
show your work
The function f(x) = x² + 12x - 3 has two distinct real roots and no rational or complex roots. The possible rational roots are ±1 and ±3, but they are not actual roots of the equation.
To find the number of complex zeros and possible rational zeros of the function f(x) = x² + 12x - 3 = 0, we can use the same methods as in the previous question.
According to the rational root theorem, any rational root of the polynomial must be of the form p/q, where p is a factor of the constant term (-3) and q is a factor of the leading coefficient (1). The possible rational roots are therefore ±1, ±3.
To determine if there are any complex roots, we can use the quadratic formula. The solutions to the equation f(x) = 0 are given by
x = (-b ± √(b² - 4ac)) / 2a
Plugging in the coefficients of the polynomial, we get
x = (-12 ± √(12² - 4(1)(-3))) / 2(1)
x = (-12 ± √(156)) / 2
x = -6 ± 3√(13)
Since the discriminant (b² - 4ac) is positive, the square root is real, and the roots are two distinct real numbers. Therefore, there are no complex roots.
The possible rational roots we found earlier, ±1 and ±3, are not actual roots of the equation, since plugging them into the equation does not give us zero. Therefore, there are no rational roots either.
In conclusion, the equation f(x) = x² + 12x - 3 = 0 has two distinct real roots and no complex or rational roots.
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--The given question is incomplete, the complete question is given
" State the number of complex zeros and the possible rational zeros for the function f(x) = x² + 12x -3 = 0
show your work"--