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3 years ago

Greg drove 660 miles in 12 hours. At the same rate, how long would it take him to drive 495 miles?

1 answer:

3 0

This one has two parts, first we have to find out the speed to drive 660 miles in 12 hours. Divide 660 by 12 to get the speed of 55 miles per hour, that is your rate for the next part.

Next we need to find out how long it will take to drive 495 miles at the same pace of 55 mph.

Do the same thing 495/55. That will give you your final answer.

495/55= 9

It will take him 9 hours to drive 495 miles at a rate of 55 mph.

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3 years ago

The height of a giant redwood tree is 200 feet, and the height of an oak tree is 120 feet. Taking the height of the redwood tree

marta [7]

Answer:

$\% Change = \frac{|120-200|}{200} *100 = 40\%$

And the interpretation for this value is that the oak tree is have a height of 40% lower than the Redwood tree

Step-by-step explanation:

For this case we can calculate the % of change with the formula of relative change given by:

$\% Change = \frac{|New -Base|}{Base} *100$

For this case the Base value is 200 ft since represent the heigth of the redwood tree selected as the base

And the New value would be 120 who represent the height of the oak tree

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4 years ago

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