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marysya [2.9K]
3 years ago
9

Select the correct answer.

Mathematics
1 answer:
Butoxors [25]3 years ago
5 0

Answer:

Hello there the Correct answer The only answer choice that produces -2x²+2 is D.

Because (-x²+2x+3)+(-x²-2x-1) = -x²+2x+3-x²-2x-1 = -2x²+2

answer: D

Hope It Helps!

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A bicycle wheel travels 321 in for each revolution. What is the radius of the wheel ​
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Answer:

51.1 ≈ r

Step-by-step explanation:

"A bicycle wheel travels 321 in for each revolution"- means that 321 is the circumference of the wheel that is a circle.

C = 2· π· r

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321 = 2· π· r, divide both sides of the equation by 2 π

(321/2·π) = r , use calculator, solve and round the answer

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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3 0
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