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3 years ago

8

A square has an area of 49 sq in. How do you find the perimeter?

1 answer:

lutik1710 [3]3 years ago

5 0

Answer:

The perimeter is 28 in.

Step-by-step explanation:

We know that the area is 49 square inches and that the area of a square equals length times width. Also, all sides of a square are equal. 7 times 7 equals 49, so the length and width are both 7 inches. The perimeter is equal to all the sides added together. There are four sides in a square, and we know that each side is 7 inches. Therefore, we can add 7+7+7+7 (or multiply 7 times 4) to get the square’s perimeter: 28 inches.

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You know that 12x=60, and that x=5. Which property of equality would you use to conclude that 12•5=60?

alexandr402 [8]

ANSWER

The substitution property of equality.

EXPLANATION

We know that:

$12x = 60$

and that

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Since x=5 or 5=x , we can substitute x for 5 wherever we see x in the given equation.

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3 years ago

Let f(x)=−1/4(x+4)^2−8 . What is the average rate of change for the quadratic function from x=−2 to x = 2? Enter your answer in

kiruha [24]

Answer:

Average rate of change of function is -2.

Step-by-step explanation:

Given $f(x)=\frac{-1}{4}(x+4)^2-8$ .

we have to find the average rate of change for the quadratic function from x=−2 to x = 2.

$f(-2)=\frac{-1}{4}(-2+4)^2-8=\frac{-1}{4}(4)-8=-9$

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