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notka56 [123]
2 years ago
10

Pls help I need it today!!!! 80 points!!!!! Part 1: Looking at the data plots, which test do you think the students scored bette

r on? Do you think
has more variation than the other or is the variation about the same for both tests? Use complete se
answer and explain your reasoning.
Part 2: Calculate the mean (rounded to the nearest whole number) and mean absolute deviation for t
Part 3: Do your results from part B prove or disprove your hypotheses from part A? Use complete ser
answer and explain your reasoning.
MacBook Air
Mathematics
1 answer:
aliya0001 [1]2 years ago
3 0
Where are the data points?
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Solve for y.<br> y y<br> —— = ——<br> P-9 P+9
Veronika [31]

9514 1404 393

Answer:

  y = 0

Step-by-step explanation:

Subtracting the right side gives ...

  \dfrac{y}{P-9}-\dfrac{y}{P+9}=0\\\\y\left(\dfrac{(P+9)-(P-9)}{P^2-81}\right)=0\\\\y\left(\dfrac{18}{P^2-81}\right)=0\\\\\boxed{y=0}

The factor multiplying y cannot be zero, so y must be zero.

5 0
3 years ago
What is the approximate distance between the points (1,-2) and (-9,3) on a coordinate grid
jeka57 [31]

<u>Answer</u>

5\sqrt{5} ≈ 11.1803398874989485


<u>Detailed Explanation </u>


We will be using the distance formula for this problem


\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}


Now, let's input the numbers into the formula.


\sqrt{\left(-9-1\right)^2+\left(3-\left(-2\right)\right)^2}


Solve.


Therefore, the distance between the two points is

5\sqrt{5} ≈ 11.1803398874989485

3 0
2 years ago
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Factor this trinomial: x2−2x−24
Elza [17]

It’s (x-6)(x+4) so the first one and last one

5 0
3 years ago
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Is 45 a multiple of 4? Explain your answer.<br> 50
poizon [28]

Answer:

No

Step-by-step explanation:

Because 4 cannat be mutiplyed  into 45

8 0
2 years ago
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⚠HELP!!!!!⚠1. The community center is putting on a play. There are several things the crew has to create for the scenery.
BaLLatris [955]
A) $6.17 each X 4 poster boards = $24.68 total

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3 years ago
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