Find the value of a2 + b when a = -2 and b = 5

Mathematics

1 answer:

REY [17]3 years ago

4 0

Answer: 9

Step-by-step explanation: In this problem, we're going to evaluate a² + b knowing that a = -2 and b = 5.

So the first thing we want to do is substitute these numbers into our problem.

Since a = -2, we will replace a with a -2 and as we do that, we will put that -2 in parentheses and square it since we have a². Squaring a number just means multiplying a number by itself so (-2)² is equal to 4 since a negative multiplied by a negative gives us a positive.

Now we will replace b with 5 and now we have the following.

4 + 5 simplifies to 9.

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What is the percent of 60 is 15

frutty [35]

To find the percent of 15 out of 60, you have to divide fifteen by sixty.
Then, you multiply your answer by 100. (We do this because 100 percent is a exact amount. 100% of sixty is...well, sixty.)

15 / 60 = 0.25

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Next, add a percent sign:

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5 0

3 years ago

(1/4) raised to the 3z-1 = 16 raised to the z+2 multiplied by 64 raised to the z-2

meriva

:) Brainliest pls?

Answer:

z = 3/8

Step-by-step explanation:

(1/4)^(3z-1) = (64^(z-2)) * (16^(z+2))

The work is too much. I don't have a camera to take a photo of the paper.

z = 3/8

6 0