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andrew11 [14]
3 years ago
13

A crew of highway workers paved 1/5 mile in 1/8 hour. If they work at the same rate, how much will they

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer:

The easiest approach is to realise that one hour is 3 times longer than 20 minutes. The longer the time, the more they will pave.

215 of a mile, in 20 minutes, how much in 60 minutes?#

They will pave 3 times more.

215×31=615 of a mile

615=25 of a mile

You could also use the 'unitary method' where you find out how much they pave in ONE minute (divide by 20) and them multiply by 60 to find how much in one hour.

Look at what happens:

215÷20×60

=215×120×603

=215×3 ← exactly the same maths.

=25

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Find the distance driven, if you drive at 60 mph for 3 1/2 hours. Round to the nearest whole mile.
blsea [12.9K]
The answer is <span>C. 210 mi
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3 years ago
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Z^m-n (z^m+ z^m+n + z^n)
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Answer:Your left hand side evaluates to:

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After eliminating the common terms:

m+(−1)mn from both sides, we are left with showing:

(−1)m+(−1)mnp=(−1)m+np

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3 years ago
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It would take them 120 hours to get to the same point on the path again.

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(That is a lot of time, do you have the numbers correct?)
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