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Lana71 [14]
3 years ago
6

A student took a total of 4 tests over the course of 8 weeks. How many weeks of school will the student attend to take a total o

f 20 tests?
Mathematics
1 answer:
Julli [10]3 years ago
3 0

Answer:

4/8 = 20/x

20 x 8 = 160

160 ÷ 4 = 40

the student will attend 40 weeks of school

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Use transformations to solve the equation<br> 2/3y = 18
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<u><em>Answer: y=27 and 27=y *The answer should be positive sign.*</em></u>

Step-by-step explanation:

multiplication property of equality is multiplying both sides of an equation by the same number does not change the equation.

a*c=b*c

division property of equality is dividing both sides of an equation by the same non-zero number does not change the equation.

a/c=b/c for c≠0

multiply by 3 both sides of an equation.

3*2/3y=18*3

simplify.

18*3=54

2y=54

divide by 2 both sides of an equation.

2y/2=54/2

simplify by equation.

54/2=27

27*2=54

54/27=2

2*27=54

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Hope this helps!

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3 years ago
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3 years ago
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4 years ago
Help me thanks<br> Xxxxxxxxxx
34kurt

Answer:

A : 6.5

Step-by-step explanation:

7 0
3 years ago
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Fudgin [204]

Answer:

1: D

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Step-by-step explanation:

8 0
3 years ago
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