What is the percent decrease of 80 to 64

1 answer:

6 0

The amount of decrease is (80 - 64) = 16

The fraction of decrease is the fraction of the original amount that disappeared.

That fraction is (16 / 80) = 1/5 = 0.2

To change a decimal to a percent,
move the decimal point 2 places that way ==> .

0.2 = 20%

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the results of a poll indicate that between 33% and 37% of the population of a town visit the library at least once a year. what

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The margin of error is ±2%

<h3>What is Margin error?</h3>

A margin of error is a statistical measurement that accounts for the difference between actual and projected results in a random survey sample.

Let x be margin of error and y be the percentages of the population.

So,

y-x =33%

y +x = 37%

Solving above equations

2y= 70

y= 35%

and x= 2%

Hence, the margin of error is ±2%.

Learn more about this concept here:

brainly.com/question/11421935

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