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ch4aika [34]
4 years ago
8

A road crew must repave a road that is 45 miles long. they can repave 120 miles each hour. how long will it take the crew to rep

ave the road
Mathematics
1 answer:
Nostrana [21]4 years ago
7 0
<span>120 miles----------------------1 hour.
45 miles ----------------------?? x hours 

x=  45 / 120 = 0.375 hours 


</span>
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Twice the sum of a number and 2 is equal to three times the difference of the number 4
Evgesh-ka [11]

Answer:

The number is = 16

Step-by-step explanation:

Given:

Twice the sum of a number and 2 is equal to three times the difference of the number and 4.

To find the number.

Solution:

Let the number be = x

The equation can be now written as:

2(x+2)=3(x-4)

Solving for x

Using distribution:

2x+(2\times2)=3x-(3\times4)

2x+4=3x-12

Adding 12 both sides.

2x+4+12=3x-12+12

2x+16=3x

subtracting 2x from both sides.

2x-2x+16=3x-2x

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∴ x=16

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