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stira [4]
3 years ago
9

For the data in the table, does y vary directly with x? if it does, write an equation for the direct variation.

Mathematics
1 answer:
blondinia [14]3 years ago
7 0
I believe it's c, sorry if I'm wrong
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A psychologist wants to know if the difficulty of a task influences our estimate of how long we spend working at it. She designs
Delicious77 [7]

Solution :

It is given that a psychologist wants to determine the difficulty of the task influences on the estimate of how long people spend working on it.

Now we have to describe a experiment by using a completely randomized design and learn the effect of the difficulty on the estimated time is by randomly assigning 15 students to a Group 1 of easy mazes and other 15 students to the second group 2 of hard mazes. And then we compare the time estimates of the two groups.

7 0
2 years ago
Gracie is shipping a cube shaped box. It measures 14 in x 14 in x 14 in. What is the surface area of the box. Please show work)
Aliun [14]
So you do length times width and in your case it would be 14 times 14 = 196
6 0
3 years ago
Not sure how to do this
OLEGan [10]
It's pretty simple! So it looks like you are learning proportions. You would cross multiply to achieve your answer. 

First, let's do your first problem: 

2     12
--- = ----
5       n 

You would take 5 and multiply it by 12 and get 60! Then you would do the same with 2 times n, giving you 2n (because you do not know what n represents YET.) 

Now you should have this:
60=2n OR 2n=60

We must isolate our variable, in order to do that, get rid of two! But how? You would do this by dividing 2n by 2. Yet in equations, when you do something to one side, you must do it to the other because they must be EQUAL! (hence the "equa-" in equation) 

2n=60
---   ---
2      2  DIVIDE 2 into 60
----------
n= 30   Simplify! 

Your final answer for the first question is n= 30! 



8 0
3 years ago
F(x)=(x-3)^2-1 give me of zeros/x-intercepts.
RSB [31]

Answer:

of zeros /x-intercepts

x1=2

x2=4

3 0
3 years ago
Remo needs to buy a countertop for a bathroom. He calculated the area as 10 square feet. The actual area is 9.5 square feet. Wha
Digiron [165]

Answer:

The answer is either 5.26 or 5 I think its 5.26

Step-by-step explanation: The reason why I think its the two answers I said is because 10 is 10 percent of 100 so 9.5 is 9.5 percent which makes me think that

4 0
3 years ago
Read 2 more answers
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