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balandron [24]
3 years ago
8

A basketball coach asks half of his players to stretch before each game; the other players do not stretch. After a month of game

s, she analyzes their playing stats. She concludes the stretching helped improve their performance on the court. How can the coach test the means to be sure the results not likely to happen by chance? Answers are in the photo!

Mathematics
1 answer:
arlik [135]3 years ago
5 0

Answer:

C

Step-by-step explanation:

If the coach repeats the experiment, she will get more accurate results. This is because the more subjects (in this case, players), the more people to test on, and the lesser chance of an outlier (in this case, someone with abnormally high or low performance).  

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Helppppppppppppfpvkvkkvmvmvmvmvmvmgmvm
zepelin [54]

Answer:

I think it's 2.56

you convert the 8 percent to a decimal and then you times it to 3.20

3.20×.8=2.56 (it's wrong)

6 0
3 years ago
Read 2 more answers
If you plot the point -8.85 on a number line, would you place it to the left or the right of 8.8 explain
grigory [225]
Left


because -8.85<8.8, small numbers goes to the left while larger ones go to the right
6 0
2 years ago
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Write the equation of the graph
olchik [2.2K]

Answer:

y = 2.cos(x) - 2

Step-by-step explanation:

1. Shifting cos(x) right or left, top or down, as the graph in the question has the same illustration of  cos(x). Consider

y = a.cos(x) + b

2. find a and b by using two sample points from the graph: (0, 0) and (\pi, -4)

0 = a.cos(0) + b  => a + b = 0\\ -4 = a.cos(\pi) + b => b-a=-4\\\left \{ {{2b=-4} \atop {2a=4}} \right.\\a = 2, b=-2\\

5 0
3 years ago
How do I do this?? Help!
Shkiper50 [21]

Hi there!

In order to use the elimination method, you have to create one variable that has the same coefficient. This is to be able to eliminate one variable and have a one variable equation (which you can then solve).

In your case, we'll have the "x" have the same coefficient by multiplying the top equation by 4 and the bottom equation by 2 :

4( -2x + 3y = -4) → -8x + 12y = -16

2( 4x - 2y = 16) → 8x - 4y = 32


Now that both of your equation have a variable with the same coefficient, you need to choose rather you need to add or subtract the equations in order to get rid of the variable (in this case we want to get rid of the "x").

In your case, you want to add both equation together which will give you :

8y = 16


Now that you only have one variable, all you need to do now is solve the equation for "y" :

8y = 16

Divide each side of the equation by 8

y = 2 → Your answer


There you go! I really hope this helped, if there's anything just let me know! :)


7 0
3 years ago
Read 2 more answers
James when to sleep at 9:10 he woke up at 9:45 how long was he sleep
horrorfan [7]

Answer:

35 minutes

Step-by-step explanation:

Take the lastest time and subtract the earliest time

9:45

9:10

------------

  :35

35 minutes

8 0
3 years ago
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