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Yuliya22 [10]
3 years ago
13

A ride on the roller coaster costs 4 tickets while the boat ride only costs 3 tickets. Michael went on the two rides a total of

10 times and spent a total of 37 tickets Which equation is true?
Mathematics
2 answers:
OLEGan [10]3 years ago
8 0
<span>Let x be the number of times that Michael rode on the roller coaster and let y be the number of times that he rode on the boat, then: x + y = 10 [because he went on the two rides a total of 10 times], and 4x + 3y = 37 [because a ride on a roller coaster costs 4 tickets and the boat ride costs 3 tickets and he spent a total of 37 tickets] From the first equation, 4x + 4y = 40 subtracting the second equation from the third equation gives: y = 3, and from the first equation x = 10 - y = 10 - 3 = 7 Therefore, Michael rode on the roller coaster 7 times and on the boat 3 times.</span>
Delicious77 [7]3 years ago
4 0

The answer is C. Hope this helps! :D

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Answer:

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Step-by-step explanation:

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The change in the rectangle's area is the following:  

\frac{dA}{dt} = w\frac{dl}{dt} + l\frac{dw}{dt}

When the length is 8 meters and the width is 18 meters we have:

\frac{dA}{dt} = 18 m*1\frac{m}{d} + 8 m(-2 \frac{m}{d})

\frac{dA}{dt} = 18 \frac{m^{2}}{d} - 16 \frac{m^{2}}{d}

\frac{dA}{dt} = 2 \frac{m^{2}}{d}

Therefore, the area is changing at 2 m² per day.

I hope it helps you!                  

8 0
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Step-by-step explanation:


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