3 years ago

28 beats in 4 seconds how many beats in 30 seconds

Mathematics

1 answer:

sattari [20]3 years ago

3 0

Answer:

210 beats

Step-by-step explanation:

28 beats per 4 seconds

28 ÷ 4 = 7

7 beats per second

7 beats · 30 seconds

= 210 beats

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The high school graduating class of 2010 was 260 people. Five years later the high school graduating class was 320 people. By ap

jeka94

Answer:

The high school graduating class changed by approximately 23%

Step-by-step explanation:

we have

The high school graduating class of 2010 was 260 people

Five years later the high school graduating class was 320 people.

we know that

260 people represent the 100%

The difference is (320-260)=60 people

using proportion

Find out what percentage represent 60 people

Let

x ----> the percentage that represent 60 people

$\frac{260}{100\%}=\frac{60}{x}\\\\x= 100\%(60)/260\\\\x=23.1\%$

therefore

The high school graduating class changed by approximately 23%

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Simplify 2 to the 5 power to the fourth power over 3 to the second power

melisa1 [442]

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Step-by-step explanation:

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