Distance to the moon

The moon is about 240,000 miles from the earth.

a. write this number in scientific notation

b. if a rocket traveled at 4 x 10^4 miles per hour how long would it take for it to reach the moon?
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1 Answer

a)   scientific notation:  240000 = 2.4 x 10^5

 

b)   time to get to the moon = (2.4 x 10^5)/(4 x 10^4) = 6 hours
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