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3 years ago

15

John played a note on his tuba that vibrated the air 70 times per second. If he played the note for 5 seconds, how many times di

d the air vibrate?

2 answers:

Greeley [361]3 years ago

5 0

Answer:

Step-by-step explanation:

All you have to do is multiply the numbers.

lutik1710 [3]3 years ago

3 0

That's simple just multiply 70 and 5

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2 years ago

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Rama09 [41]

Answer:

x=6

Step-by-step explanation:

Remember, the formula for area is the length times the width. So, if we know the width is 3, and we know the total area is 24, all we need to do is divide 24 by 3 to get 8. 8 is the split up side, the one that is x + 2. To find x, simply subtract 2 from 8. 8 - 2=6.

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3 years ago

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2 years ago

The earth has a diameter of 7917.5 mi. What is the arc length of half the earth?

Serhud [2]

Answer:

Arc length is 12436.8m

Step-by-step explanation:

arc length = $\frac{M degree}{360degree}$ * πD

where M is the angle measure of the arc

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considering the earth as a circle and half the earth as a semi circle the angle measure of the arc will be = 180 degrees

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3 years ago