A copy machine makes 36 copies per minute. How many copies does it make in four minutes and 45 seconds?

Mathematics

1 answer:

blsea [12.9K]3 years ago

7 0

Answer: The copy machine makes 171 copies in 4 minutes and 45 seconds.

Step-by-step explanation:

Let's dissect the question. The copy machine makes 36 copies per minute.

36 per min.

To see how many copies it makes in 4 minutes and 45 seconds, we multiply 36 * 4.75. 45 seconds is 3/4ths of a minute, or 0.75 of a minute.

$36 * 4.75=171$

It makes 171 copies in 4 minutes and 45 seconds.

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Numerator should be = 0
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Solve equation for numerator=0
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Check which
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2)h=-1, 4(-1)(2-2*(-1)) =-4*4=-16 ≠0, so we can use h= -1, also.

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So,
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