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kipiarov [429]
2 years ago
7

If y is directly proportional to x and y = -15 when x=3 find the value of y when x is 20?

Mathematics
1 answer:
leonid [27]2 years ago
5 0
Answer: y = 2

Explanation:

When x = 3, y = -15

And x and y are directly proportional.

thus x + k ==> y + k

when x = 3 + 17 ==> y = -15 + 17

=> x = 20 ==> y = 2
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<h2>QUESTION</h2>

\mathsf{-0.5(14a - 22)}

<h2>FIRST YOU HAVE TO DISTRIBUTE:</h2>

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<h2>SOLVING FOR OUR ANSWER</h2>

\mathsf{(0.5)(14a) =  - 7a} \\   \\  \mathsf{( - 0.5)( - 22) = 11}

<h2 /><h2>NEW EQUATION/THE ANSWER YOU WERE LOOKING FOR </h2>

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<h2>SIDE NOTE: THE DISTRIBUTIVE FORMULA IS</h2>

\text{a(b + c)} \\  \text{a(b) + a(c)} \\ \text{a(b) = ab} \\  \text{a(c) = ac} \\ \text{ \underline{ = ab + ac}}

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