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ad-work [718]
3 years ago
13

A contractor digs a hole for the basements of a new house that is 40 feet long and 10 1/2 feet deep. What is the width of the ho

le if 6,510 cubic feet of dirt are removed?
A.80 feet
B.81 1/4 feet
C.16 Feet
D.15 1/2 feet
Mathematics
1 answer:
34kurt3 years ago
7 0
D. 15.5

40*10.5 = 420

6510/420 = 15.5
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\left[\begin{array}{ccc}2&6&3\\-5&1&4\end{array}\right]

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R2 ÷ -5 = \left[\begin{array}{ccc}1&3&1.5\\1&-0.2&-0.8\end{array}\right]

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3 years ago
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2 years ago
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Step-by-step explanation:

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