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yuradex [85]
3 years ago
15

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

n be modeled by the equation h = 8 cosine (StartFraction pi Over 10 EndFraction t). What is the period of the function?

Mathematics
2 answers:
Leona [35]3 years ago
5 0

Answer:

  20 seconds

Step-by-step explanation:

The period is the value of t that makes the cosine argument change by 2π.

That value is ...

  2π = π/10t

  20 = t . . . . . . . multiply by 10/π

The period of the function is 20 seconds.

Nadya [2.5K]3 years ago
3 0

Answer:

the answer is in the picture below :)

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4 0
3 years ago
 A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 25 ​pennies, 21 ​dimes, and 29 quarters. The rest of the
OlgaM077 [116]
<h3>Answer:  </h3><h3>There are 75 coins that aren't nickels. </h3><h3>One equation you could use is 75+n = 92</h3>

(This solves to n = 17 meaning there are 17 nickels)

=====================================================

Explanation:

"There are 25 ​pennies, 21 ​dimes, and 29 quarters", so there are 25+21+29 = 75 coins so far. This is the amount of coins that aren't nickels. The rest are nickels, which is some amount n. This adds to the 75 to get 75+n. Set this equal to 92 because there are 92 coins in all. That's how we end up with 75+n = 92.

-----

Extra info

The equation 75+n = 92 is the same as n+75 = 92. Subtract 75 from both sides to isolate n. You should get n = 17 after doing so.

3 0
3 years ago
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