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lilavasa [31]
3 years ago
6

Daniela measures her math book and records its width as 21.9 cm to the nearest tenth of a centimeter. The actual measurement of

the book’s width is 22.0 cm. What is the percent error of her measurement? Round your answer to the nearest tenth of a percent.
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0
The percent of error is 0.5%
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Answer:

r - 5 = 2c

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Step-by-step explanation:

To write an equation for the problem, we first need do declare the value of the number of apps cora has.

Let c = Cora's apps

r - 5 = 2c

r - 5 is used to indicate that Rita deleted 5 apps.

2c is used to represent the twice the number of apps Cora has.

Now you said that Cora had 35 apps.

Let's plug that into the equation.

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r - 5 = 2(35)

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Now we transpose the -5 to the other side to leave r.

r = 70 + 5

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So if Cora has 35 apps, then Rita will have 75 apps.

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