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NISA [10]
3 years ago
5

How to find y when x is given

Mathematics
1 answer:
pshichka [43]3 years ago
8 0

Answer: graph it ?

Step-by-step explanation:

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The value of y varies directly with x. If x = 218, then y = 436. What is
adell [148]

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

To find the value of the value of x when

y = 14 we must first find the relationship between them

The statement

The value of y varies directly with x is written as

y \:  \:  \:  \alpha  \:  \:  \: kx

where k is the constant of proportionality

when x = 218

y = 436

So we have

436 = 218k

Divide both sides by 218

k = 2

So the formula for the variation is

<h2>y = 2x</h2>

when y = 14

We have

14 = 2x

Divide both sides by 2

<h3>x = 7</h3>

Hope this helps you.

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F(x) = 4x2 – 7x + 7<br> Find f (7)
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Answer:

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=7x=15

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