February 28, 2017

Homework Help: Mathematics

Posted by Brielle on Monday, November 26, 2007 at 4:14pm.

I don't understand one problem and if you have the time could you please check the other to that follow?
1. Jake was the winner of the mens bike race. He finished the race in 1 hour, 33 minutes, and 32 seconds. Lily had a time of 2 hours and 52 seconds. How much faster was Jake than Lily to the nearest minute?

It took 30 years to build the Great Pyramid at Giza. The pyramid has 2,300,000 blocks. If the pyramid was built continuously, 24 hours a day for 30 years. How many blocks were place on the pyramid per hour?

I got about nine blocks...is that right?

i also have another problem:
To qualify for the Boston MArathon, a runner must have a time in another marathon of 3 hours and 20 minutes. To the nearest 10th of a minute, what is the runners pace (minutes per mile) in order to complete 26.2 miles in 3 hours and 20 minutes?

i got 7.6

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