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r-ruslan [8.4K]
3 years ago
14

A truck driver drove 13 hours and earned $520. What is the hourly rate?

Mathematics
2 answers:
ra1l [238]3 years ago
8 0

Answer:

Step-by-step explanation:

\frac{\$ 520}{13hr}=\$40/hr

Lorico [155]3 years ago
6 0

Answer:

$40

Step-by-step explanation:

520/13=40

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You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed
k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

P = 100 --- perimeter

Required

The largest area

The perimeter is calculated as:

P = 2 * ( L + W)

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2 * ( L + W) = 100

Divide both sides by 2

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Make  L the subject

L = 50 - W

The area is calculated as:

A= L * W

Substitute L = 50 - W

A= (50 - W) * W

Open bracket

A = 50W - W^2

Differentiate with respect to W

A' = 50 -2W

Set to 0; to get the maximum value of W

50 - 2W = 0

Collect like terms

-2W = -50

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W = 25

So, the maximum area is:

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A = 50 * 25 - 25^2

A = 1250 - 625

A = 625

3 0
3 years ago
Two ways to solve 2(4x-11)=10
Leokris [45]
Hi there,

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Hope this helps :)
3 0
3 years ago
Write an algebraic expression for the phrase. The quotient of 5 and the sum of 12 and a number x
anzhelika [568]

Answer:

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3 0
3 years ago
Will 6,8, and 14 form a triangle
katrin [286]
No, you can't form a triangle. 
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3 years ago
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LiRa [457]

Answer:

The first picture without the diagram is true, and the other one is false.

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