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Feliz [49]
3 years ago
5

The world record for running the marathon is about 26 miles in 130 minutes. How long would a runner at that speed take to run 9

miles?

Mathematics
1 answer:
Brums [2.3K]3 years ago
3 0
45 minutes
26/130=9/45
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A plastic box has a length 4 cm longer than its width. The area of the rectangular top of the box is 77 square cm. Find the leng
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Answer: the length is 11 cm.

The width is 7 cm.

Step-by-step explanation:

Let L represent the length of the rectangular plastic box.

Let W represent the width of the rectangular plastic box.

The area of the rectangular top of the box is 77 square cm. This means that

LW = 77- - - - - - - ;- - - -1

The plastic box has a length 4 cm longer than its width. This means that

L = W + 4

Substituting L = W + 4 into equation 1, it becomes

(W + 4)W = 77

W² + 4W = 77

W² + 4W - 77 = 0

W² + 11W - 7W - 77 = 0

W(W + 11) - 7(W + 11) = 0

W - 7 = 0 or W + 11 = 0

W = 7 or W = - 11

Since the width cannot be negative, then W = 7cm

L = 77/7 = 11 cm

4 0
3 years ago
Give formula to calculate Selling price when profit is given in percentage. ​
vekshin1
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'b' represents the base price or the original price.

-T.B.
5 0
2 years ago
Which expression is equivalent to p x q x q x q x q x q x q x q x q ​
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What is the least common multiple of 8 and 12?<br> 96<br> 24<br> 48
Aleonysh [2.5K]

Answer:

B. 24 :)

Step-by-step explanation:

I hope this helps!

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What is the volume of the cube if the side length is 40cm​
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Answer:

The formula to find the volume of a cube : s^3 so

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