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katovenus [111]
3 years ago
9

A truck can travel 80 miles in the same time that ot takes a car to travel 90 miles. If the truck’s rate is 5 miles per hour slo

wer than the car’s, find the average for each.
Mathematics
1 answer:
SIZIF [17.4K]3 years ago
3 0
The truck was going 40 miles per hour

The amount of time was 2 hours:
(90-80: 10)(10/2=5)

80 divided by two is 40


The car was going 45 miles per hour


(90-80:10)(10/2=5)

90 divided by two is 45


Hopefully you find this helpful
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-- The difference of 2 logs is the log of the quotient of their arguments.

             log(11) - log(6) = log(11/6)

-- 1/3 of the log of something is the log of its cube root.
 
                     1/3 log(8) = log(∛8) = log(2)
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-- If a bunch of logs all have the same base, then their sum
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         log(11) - log(6) + 1/3 log(8) + 1/3 log(729)  =

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                                      log(33) = about <em>1.519</em> (rounded)

============================================

The other way:

log(11) =                  1.0414
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log(8) = 0.9031
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Adum up:                 <em>1.5184</em>

(Note:  Everything is rounded.)


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