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Shkiper50 [21]
3 years ago
10

-8x+4y=28 solve for y

Mathematics
2 answers:
olga55 [171]3 years ago
8 0
This is how I would do it:
-8x=28-4y divide the entire equation by 4
-2x=7-y Put y back on the left and put x on the right 
y=7-2x.
mina [271]3 years ago
7 0
-8x+4y=28 You need to subtract -8x from both sides leaving:
4y=8x+28 From here you need to divide by 4 on both sides leaving:
y= 8x+28/4 Simplify:
y=2x+7


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Answer:

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WITCHER [35]

The age of the father is 57 years old

<h3>Calculating mean of a population</h3>

Total age = Average age x Population

Average of the four children = 15

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Total age of the four children = 15 x 4

Total age of the four children = 60 years

If the parents are added:

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The father is 4 years older than his wife

Let the age of the father be x

The age of the wife = x - 4

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2x = 114

x = 114/2

x = 57

Therefore, the age of the father is 57 years old

Learn more on The mean of numbers here: brainly.com/question/20118982

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6 0
1 year ago
Solve for b.<br> 15 - 3b=63
kirill115 [55]
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serg [7]

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NeX [460]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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