3 years ago

Fast please I need right now

Mathematics

1 answer:

Neporo4naja [7]3 years ago

5 0

Answer:

the answer is C

Step-by-step explanation:

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Question 4 of 9<br> (7 + 1) + 8 = 7+ (1 + 8)<br> A. True<br> B. False

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3 years ago

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3 years ago

A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104

Art [367]

Answer:

The answer is 8.

Step-by-step explanation:

We need to use the quadratic formula, that is ax2+bx+c=0

Where

$x=\frac{-b +/- \sqrt{b^{2}-4*a*c } }{2a}$

For the given equation x2+5x-104=0 we have

a=1, b=5, c= -104

If you solve that, we will have x=-13. x=8, two answers,

The first one, by being negative does not have physical sense (there are no negatives quantities when you measure the length of something)

So we use the anwser x=8

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