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Stella [2.4K]
3 years ago
10

A study of video game usage and eyesight was looked at 400 high school students. For each student who plays games, the investiga

tor found someone of the same in various aspects (same sex, age, and race, etc.) who does not play games. And he measured their eyesight to compare. What type of experimental design is this?
a. Matched pairs design. b. Randomized Block design
C. A completely randomized design
d. An Uncontrolled experiment e. Convenience design
Mathematics
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

Explanation is in a file

Step-by-step explanation:

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The factors of 55 are________________________________.I know that 55 is a (prime/composite) number because...
statuscvo [17]

Answer:

11 & 5 are the factors of 55

Step-by-step explanation:

Factors of 55

11 × 5 = 55

Thus, 11 & 5 are the factors of 55

 

<u>-TheUnknownScientist</u><u> 72</u>

7 0
2 years ago
Ali has q quarters. Tom has four more quarters than Ali.
Anna35 [415]

Answer: x(.25)+(4+x(.25))=y

Step-by-step explanation:

1. set up the equation-

Ali has an unknown amount of quarters so make that x.

We know quarters are 25 cents so .25 if he has one quarter you put that one quarter into x, 2 into x and so on

Tom has 4 more, since he has 4 more it is 4+x and one again times .25

2. that is it

7 0
2 years ago
Is 4 to 7 the same as 7 to 4? Explain why or why not.
Julli [10]
Yes because 4 to 7 is the same as 7 x 4 which equals 28. 7 to 4 is the same as 7 x 4 which also equals 28. 
3 0
3 years ago
Read 2 more answers
Evaluate the expression when a=3<br><br><br> 2a=
BaLLatris [955]

Answer:

<em><u>6</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>ur</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em>

<em><u>lol</u></em><em><u> </u></em><em><u>:</u></em><em><u>)</u></em>

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6 0
3 years ago
The sum of three numbers is 50. One number is five more than a second number. It is also twice the third. Find the numbers.
Blababa [14]
Let
One Number = x
Second Number =x-10
Third Number=x/2

Sum of three numbers is 50
x+x-10+x/2=50
2x-10+x/2=50
Multiply by 2 both sides
2*(2x-10+x/2)=50*2

4x-20+x=100
5x=100+20
5x=120
x=120/5
x=24

One number = x=24
Second number =x-10=24-10=14
Third number= x/2=24/2= 12
8 0
3 years ago
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