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4 years ago

7

Mary is two inches more than half as tall as John. Translate the sentence into an equation using M to represent Mary height and

J to represent john height

1 answer:

Yuri [45]4 years ago

7 0

M(2)+2=J
Mary is half the height so multiply by 2 then add the extra 2 inches
Ex: 38inches(2)+2=78inches

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Answer:

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Step-by-step explanation:

f(x) = $ax^{2} +bx +c$

Let (h, k) be the vertex

An easy way to find h is to use the formula h = -b/2a

In your case where f(x) = $x^{2} +8x - 2$ a = 2 and b = 8

So, h = -8/2(1) = -8/2 = -4

Substitue -4 in for x to find k

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= 16 - 32 - 2

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Given:

Number of children = 15

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Find:

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Percentage decrease for the boys

Increase percent of the girls

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