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Savatey [412]
3 years ago
13

4. Castles and Coasters charges $12 to get

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

20+x = 12+2x is the answer and x=8

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A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300
densk [106]
Let p and m represent the numbers of miles in the plains and mountains, respectively.
.. p + m = 300 . . . . . . . the whole trip was 300 miles

time = distance/speed, so the trip time can be written as
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You can solve these two equations by any of several means. The variable p can be eliminated by subtracting 5 times the first from the second.
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5 0
3 years ago
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I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wtjfavyw

7 0
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Ahat [919]

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Step-by-step explanation:

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