Estimate the distance you can travel in 4 hours 25 minutes if you drive on average 48 miles per hour. Round your answer to the nearest mile.
The estimated distance is
miles.
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212 miles

Step-by-step explanation:

Miles per minute:

48/60

0.8 miles

25 minutes:

25×0.8

20 miles

4 hours:

4×48

192 miles

4 hours 25 minutes:

192+20

212 miles

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

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step-by-step explanation: