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dem82 [27]
3 years ago
12

A copier prints 80 pages in 5 minutes.

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0
The correct answer is D, 16 pages per minute. A unit rate is a ratio of something to one; in this case, the ratio is 16:1, or 16 pages to 1 minute. To get the unit rate for this problem, divide both numbers by 5 to get how many pages will be printed per 1 minute. 80/5 = 16, so the copier prints 16 pages in 1 minute. Answer choices A and B are not unit rates, and answer choice C is the incorrect unit rate.

Hope this helps!
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55.2

Step-by-step explanation:

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What is 0.4 divided by 5.12 in long division
Svetradugi [14.3K]
Start by mult. both 0.4 and 5.12 by 100.  What is 40 divided by 512?

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For Joe's illness, the doctor gave him a prescription of 28 pills. He needs to take 4 pills the first day, and then 2 pills each
kiruha [24]

Answer:

12 days.

Step-by-step explanation:

I looked at it this way:

He has to take 4/28 pills the first day, so it's 28-4=24. Then I divided 24 by 2.

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8 0
3 years ago
The weights of a large number of miniature poodles are approximately normally distributed with a mean of 8 kilograms and a stand
harina [27]

Answer and Step-by-step explanation:

Considering the table attached.

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σ = 0.9

z = 9.5 - 8/0.9 ≈ 1.67

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(b) at most 8.6 kg;

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(c) between 7.3 and 9.1 kg.

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z₂ = 9.1 - 8/0.9 ≈ 1.22

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3 0
3 years ago
You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find t
iogann1982 [59]

Answer:

P(2 quarters) = 19/ (13*16) = 19/208  = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

ok

first draw:  there are 20 quarters to choose from

second draw: there are 19 quarters left to choose

so Total coins are 65 coins

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P(2 quarters) =  20/65   *   (19/64)

P(2 quarters) = 4/13 *  19/64

P(2 quarters) = 19/ (13*16) = 19/208

4 0
3 years ago
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