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zhuklara [117]
4 years ago
7

The College Board states that the average math SAT score is 514 with a standard deviation of 117. Colleen gathered data from 50

students in her graduating class and found the average score to be 523. She thinks that her class’s math SAT score is different from the average. Which of the following are the correct null hypothesis and alternate hypothesis? H0: ; Ha: H0: ; Ha: H0: ; Ha: H0: ; Ha:
Mathematics
2 answers:
IgorLugansk [536]4 years ago
5 0

Answer: c

It’s on edg

sergij07 [2.7K]4 years ago
3 0

Answer:

c

Step-by-step explanation:

on edge

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The locations:
GREYUIT [131]

The quadrilateral is a trapezoid and the area of the quadrilateral is 85.04 square units

<h3>How to determine the quadrilateral?</h3>

The vertices are given as:

A:(-2, 3) B:(4, -6) C:(10, 2) D:(6, 8)

Next, we plot the vertices (see attachment)

From the attached graph, we can see that the quadrilateral is a trapezoid

<h3>How to determine the area?</h3>

From the plot, we have the following features:

Height: AD

Parallel sides: CD and AB

Calculate the lengths using:

d = \sqrt{(x_2 -x_1)^2 + (y_2 -y_1)^2}

So, we have:

AD = \sqrt{(-2 -6)^2 + (3 -8)^2}

AD = \sqrt{89}

CD = \sqrt{(10 -6)^2 + (2 -8)^2}

CD = \sqrt{52}

AB = \sqrt{(-2 -4)^2 + (3 +6)^2}

AB = \sqrt{117}

The area is then calculated as:

Area = 0.5 * (CD + AB) * AD

This gives

Area = 0.5 * (√52 + √117) * √89

Evaluate

Area = 85.04

Hence, the area of the quadrilateral is 85.04 square units

Read more about areas at:

brainly.com/question/24487155

#SPJ1

7 0
2 years ago
1
Reptile [31]

Moving up would add to the Y value. Moving to the left subtracts from the X value.

The answer would be: (X,Y) — (x-3, y + 5)

4 0
3 years ago
-4 1/2 ÷ (-2 2/3)<br><br> I need it as a mixed number in simplified form.
Leya [2.2K]
(-4 1/2) / (-2 2/3) =.....turn to improper fractions
(- 9/2) / (-8/3) =...when dividing fractions, flip what u r dividing by, then multiply

-9/2 * -3/8 =
27/16 =
1 11/16 <==

4 0
3 years ago
Can someone pls help me on this f(x)=4x-7
shtirl [24]

Answer:

Step-by-step explanation:

x=7/4

5 0
3 years ago
Which expression is equivalent to(8w 7x-5y3z-9)-2/3
Shkiper50 [21]

Answer:

56wx - 15yz -  \frac{29}{3}

Step-by-step explanation:

1. \: 56wx - 5y \times 3z - 9 -  \frac{2}{3}  \\ 2. \: 56wx - 15yz - 9 -  \frac{2}{3}  \\ 3. \: 56wx - 15yz + ( - 9 -  \frac{2}{3} )

4 0
4 years ago
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