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Vlad1618 [11]
3 years ago
7

A test has 20 question if peter gets 80% correct, how many question did peter miss

Mathematics
2 answers:
AlexFokin [52]3 years ago
6 0

Answer:

16 questions right = 80%

So Peter missed 4 questions.

Hope this helps.

:-)

SVETLANKA909090 [29]3 years ago
5 0

Answer:

4

Step-by-step explanation:

you can divide 100 by 20 and each question is worth 5 points

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Answer:
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2 years ago
Every 23 hour, Harris can sew 16 pair of jeans.
Setler79 [48]

Answer:

16 : 23

Step-by-step explanation:

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3 years ago
A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which
Aloiza [94]

Answer:

\frac{4cm}{1year}*\frac{10mm}{1cm}*\frac{1year}{365days}

Step-by-step explanation:

Whenever we are doing unit conversions, we have to remember to make the first ratio and then each successive ratio should be put <em>in such a way</em> that the top and bottom cancels out with each unit and whatever we want, remains.

A simple example would be if we were to just convert from cm to mm. Suppose we want to convert 5 centimeters to millimeters. We can write the ratios is 2 ways:

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Second:

5cm*\frac{1cm}{10mm}

The first one is correct since we want mm, mm should be on top and cm should be on bottom form cm and cm to get canceled.

Now, for our problem, we want mm on top and day on bottom. So, cm and year should cancel. Looking at the first choice, the conversion factors are correct & skimming through, we see that

cm and cm cancels (top and bottom), also year and year cancels (top and bottom), it will leave us with mm on top and days on bottom, <em>which is what we want</em>.

First answer choice is right.

6 0
3 years ago
Read 2 more answers
Help me please and thanks!!
Yuki888 [10]

Answer:

Step-by-step explanation:

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Answer:

244

Step-by-step explanation:

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2 years ago
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