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lana [24]
3 years ago
14

A contractor digs a hole for the basement of a new house that is 40 feet long and 10 1/2 feet deep what is the width of the hole

if 6510 ft.³ of dirt are removed
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
8 0
<span>the hole is 15 1/2 feet wide.</span>
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Are all squares trapezium?
Rina8888 [55]

Answer:

yes

Step-by-step explanation:

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But this is a US response so if this is from another country then the answer is no

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2/7&gt; b+5/7 what is “B”
Masteriza [31]

Answer:

-3/7 > b

Step-by-step explanation:

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At one particular store, the sale price, s, is always 75% of the display price, d
sattari [20]

Answer:

0.75d

Step-by-step explanation:

<u>Step 1:  Convert words into an expression</u>

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<em />

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5 0
3 years ago
A rectangle with an area of 81 cm² has a length that is 3 times the width. How long is the width of the rectangle? Round to the
LenaWriter [7]

Answer:

W ≈ 5.2 cm

Step-by-step explanation:

Represent the length and width by L and W respectively.

Then L * W = 81 cm^2, and L = 3W.

Substituting 3W for L in the first equation, we get:

3W * W - 81 = 0, or 3W^2 - 81 = 0.

To make it easier to find the final answer, rewrite 3W^2 - 81 = 0 as

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W^2 = ------- = 27

              3

Then W (the width) is the positive square root of 27, or W ≈ 5.2 cm

3 0
3 years ago
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How much do you need to subtract from 87/10 to make 8
lisov135 [29]

Answer:

You would have to subtract 7/10

Step-by-step explanation:

87/10 - 7/10 would equal 8

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3 years ago
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