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arlik [135]
2 years ago
4

Find formulas for​ X, Y, and Z in terms of​ A, B, and C. It may be necessary to make assumptions about the size or invertability

of a matrix in order to produce a formula.​ [Hint: Compute the product on the​ left, and set it equal to the right​ side.]

Mathematics
1 answer:
ziro4ka [17]2 years ago
8 0

Answer:

The solution is given in the attachments.

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Two trains leave New York at the same time heading in opposite directions. Train A travels at 4/5 the speed of train one. After
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<h3>Answer:  </h3><h3>speed of train A = 44 mph</h3>

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

Work Shown:

x = speed of train A

y = speed of train B

"train A travels 4/5 the speed of train B" (I'm assuming "train one" is supposed to read "train B"). So this means x = (4/5)y

distance = rate*time

d = x*7

d = (4/5)y*7 = (28/5)y represents the distance train A travels

d = y*7 = 7y represents the distance train B travels

summing those distances will give us 693

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Train A's speed is 44 mph

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