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bearhunter [10]
3 years ago
15

Variable y varies directly with variable x. If x = 12, then y = 3. What is the value of y

Mathematics
1 answer:
Monica [59]3 years ago
5 0

Answer:

<h2>y = 2</h2>

Step-by-step explanation:

To find the value of y when x = 8 we must first find the relationship between the two variables.

The statement

y varies directly with variable x is written as

y = kx

where k is the constant of proportionality

when

x = 12

y = 3

Substitute the values into the above formula and solve for k

That's

3 = 12k

Divide both sides by 12

k =  \frac{1}{4}

So the formula for the variation is

y =  \frac{1}{4} x

when

x = 8

y =  \frac{1}{4}  \times 8

we have the final answer as

<h3>y = 2</h3>

Hope this helps you

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tigry1 [53]

Answer:

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Step-by-step explanation:

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The * is just a multiplecation symbol if you didnt know

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3 years ago
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elena-s [515]

Answer:

x=60

Step-by-step explanation:

I'm assuming you meant this: (x/5)-8=4

In which case you would add 8 to both sides to get rid of the 8 on the left (your goal is to get x by itself so you want to move the numbers on the x side to the other side of the equal sign)

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Then you would multiply 5 on both sides to get rid of the fraction with the 5 on the bottom on the left side.

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podryga [215]
Model <span>

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3 0
3 years ago
(16+5) + blank = 16 + (5+10)
Murrr4er [49]

Answer:

Im not sure, but I think its like this...

Step-by-step explanation:

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I hope this is correct!!

3 0
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