2 years ago

Which number is greater and by how much?

Mathematics

1 answer:

Lana71 [14]2 years ago

4 0

Answer:

Step-by-step explanation:

first option, as the decrease percentage is applicated on a greater number than the original

e.g.

a= 10

10 + 50% = 15

15 - 50% = 7,5

A will be greater then B by 25%

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Answer:

Step-by-step explanation:

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3 years ago

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The height, h, in feet of a piece of cloth tied to a waterwheel in relation to sea level as a function of time, t, in seconds ca

BartSMP [9]

Answer:

20 seconds

Step-by-step explanation:

I assume you mean $h(t)=8\cos(\frac{\pi}{10}t)$ for your function.

As the given function is in the form of $f(t)=a\cos(bt+c)+d$ (some textbooks may write this formula differently), the period is equal to $\frac{2\pi}{|b|}$ . Hence, the period of the given function is $\frac{2\pi}{|\frac{\pi}{10}|}=\frac{2\pi}{1}*\frac{10}{\pi}=\frac{20\pi}{\pi}=20$ , or 20 seconds.