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tigry1 [53]
4 years ago
13

PLZ HELP!!

Mathematics
2 answers:
erica [24]4 years ago
7 0

It takes 1 hour to get to work.

It takes 20 minutes to get to the train station, and the rest of the trip is spent on the train that takes him to work.  That means he is on the train for 40 minutes.

20 minutes is equal to 1/3 hour and 40 minutes is 2/3 hour

So from home to train station:

1/3 hour * 42mph = 14 miles

And from train station to work:

2/3 hour * 60mph = 40 miles

So how far does Mark live from his work place?

14 + 40 = 54 miles

maria [59]4 years ago
3 0
Mark lives 20 minutes away
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Now, we have one part of QR, which is QN.

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It is (39^2-15^2)^(1/2)..which gives you 36, the square root of 1296, which happens to be the difference between the squares of 15 and 39.

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