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Irina18 [472]
3 years ago
9

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer:

20 questions.

Step-by-step explanation:

Let  x  be the number of questions on the quiz.

85 %  means  85  out of  100  (or  85/ 100  )

85/ 100   = 3/x

--->100-85=15

--->15/3=5

--->100/5=20  

Meaning each question was worth 5% and there were 20 questions.

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Arella needs to paint a board that is 2 meters wide and 3 meters tall. If one cup of paint will cover 1000 square centimeters, h
scZoUnD [109]

Hey!


The area of the board is 60,000 centimeters.


1 meter = 100 centimeters

2 meters = 200 centimeters

3 meters = 300 centimeters


Area = length × width

300 × 200 = 60,000


One cup covers 1,000 centimeters. To cover 60,000 centimeters, divide 60,000 by 1,000.


60,000 \div 1,000 = 60


That means Arella needs 60 cups


\framebox{Arella needs 60 cups of paint}

6 0
3 years ago
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Answer:

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Step-by-step Explantion:

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oee [108]

Answer:

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Step-by-step explanation:

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3 years ago
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vova2212 [387]

Answer:

the number of pints of blue paint did she use for painting her bedroom walls is 1.875 pints

Step-by-step explanation:

The computation of the number of pints of blue paint did she use for painting her bedroom walls is shown below:

= Total pint × blue paint

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= 7.5 ×  1 ÷ 4

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Answer:

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Step-by-step explanation:

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