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AlekseyPX
3 years ago
6

The string that produces the lowest tone on a piano vibrates 87 times in 3 seconds. How many times would this string vibrate in

12 seconds?
Mathematics
1 answer:
kenny6666 [7]3 years ago
6 0

Answer:

21.75

Step-by-step explanation: 87 x 3  * 12

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We have that

point C and point D have y = 0-----------> (the bottom of the trapezoid).

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the y component of  midpoint would be halfway between these lines
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<span>the x component of the midpoint of the midsegment would be halfway between the midpoint of AB and the midpoint of CD.

x component of midpoint of AB is (4d + 4f)/2.
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3 years ago
A rental car company charges $22.15 per day to rent a car and $0.07 for every mile driven. Aubrey wants to rent a car, knowing t
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The number of days that Aubrey can drive to stay in her budget is 5 days.

<h3>Inequality signs and their meanings</h3>

> means greater than

< means less than

≥ means greater than or equal to  

≤ less than or equal to  

<h3>Equation that represents the question</h3>

Total amount that can be spent ≤ (cost to rent a car per day x number of days) + (cost per mile x total miles driven)

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<h3>Determination of the number of days that Aubrey can drive</h3>

130 ≤ ($22.15dd) + ($0.07 x 275)

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130 - 19.25  ≤ $22.15dd

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d  ≤ 110.75 / 22.15

d  ≤ 5

To learn more about inequality, please check: brainly.com/question/5031619

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