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3 years ago

A guitar string vibrates back and forth 88 times in 1 minute. what is its period in seconds?

Mathematics

1 answer:

Alchen [17]3 years ago

4 0

Answer:

1.5 times per second

(1 time per second if rounded to a whole number)

Step-by-step explanation:

1 minuet is equal to 60 seconds

Because you are given 88 vibrations in one minute, you will divide 88 by 60 seconds. You want your answer in seconds.

88/60 gives us 1.466666667 on a calculator

So the guitar gives a vibration of 1.466666667 per second

If we round this, we get 1.5 vibrations per second

Or, if we round 1.4666 to a whole number then it is 1 vibration per second

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Determine the unit rates represented by 1. Zephra ran 2 miles in 0.25 hour.

Harlamova29_29 [7]

The unit rate represents 2 miles in 0.25 hour is 8 miles per hour

Step-by-step explanation:

Let us revise the meaning of rate and unit rate

1. A rate is a ratio that is used to compare different types of quantities

2. A unit rate shows how many units of the first type of quantity

corresponds to one unit of the second type of quantity

Examples:

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∵ Zephra ran 2 miles in 0.25 hour

- To find the unit rate make the denominator of the ratio = 1

∵ The unit rate = $\frac{2}{0.25}$

- Divide up and down by 0.25

∵ 2 ÷ 0.25 = 8

∵ 0.25 ÷ 0.25 = 1

∴ The unit rate = $\frac{8}{1}$

∴ The unit rate = 8 miles per hour

The unit rate represents 2 miles in 0.25 hour is 8 miles per hour

Learn more:

You can learn more about rate in brainly.com/question/9533500

brainly.com/question/317616

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