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solong [7]
3 years ago
14

marrisa got an 85% on her math quiz. she had 34 questions correct .how many questions were on the quiz

Mathematics
2 answers:
xeze [42]3 years ago
6 0

Answer:

40

Step-by-step explanation

34 divided by 85 times 100 equals 40

plz mark me as brainliest :)

Scilla [17]3 years ago
5 0

Answer:

40

Step-by-step explanation:

Let the number of questions be A.

Marissa got 85% on her math quiz and got 34 questions correct.

This Means 85% of the number of math questions =84

Therefore

85% of A = 34

This is

85/100 x A = 34

0.85 x A = 34

Divide both sides by 0.85

0.85/0.85 x A = 34/0.85

A = 40

The number of questions on the quiz was 40

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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

65

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
The Royal Fruit Company produces two types of fruit drinks. The first type is 55% pure fruit juice, and the second type is 80% p
seropon [69]

We need 56 pints of the 55 % <em>pure fruit</em> juice and 84 pints of the 80 % <em>pure fruit</em> juice to prepare 140 pints of 70 % <em>pure fruit</em> juice.

<h3>How to use weighted averages to find the correct juice concentration</h3>

In this problem we have to use two kinds of juice with different concentrations. To get a certain concentration, we must adjust quantities of each kind and <em>weighted</em> averages offers a method that is easy to apply:

70 · 140 = 55 · x + 80 · (140 - x)

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25 · x = 10 · 140

x = 56

We need 56 pints of the 55 % <em>pure fruit</em> juice and 84 pints of the 80 % <em>pure fruit</em> juice to prepare 140 pints of 70 % <em>pure fruit</em> juice.

To learn more on weighted averages: brainly.com/question/28042295

#SPJ1

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2 years ago
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iVinArrow [24]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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