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4 years ago

HELPPPPP PLZZZ

Mathematics

2 answers:

s344n2d4d5 [400]4 years ago

3 0

Answer:

1st answer

Step-by-step explanation:

Another way to say 2 coats is

to paint the fence twice

Also, that is the same as painting

2 identical fences

---------------

Tom's rate is:

+1%2F8+ = ( 1 fence ) / ( 8 hrs )

Huck's rate is:

+1%2F5+ = ( 1 fence ) / ( 5 hrs )

---------------------------

Let +t+ = the time in hrs for them

to paint 2 fences

+2%2Ft+ = ( 2 fences ) / ( t hrs )

---------------------------

+1%2F8+%2B+1%2F5+=+2%2Ft+

Multiply both sides by +40t+

+5t+%2B+8t+=+80+

+13t+=+80+

+t+=+6.154+

It will take them 6.154 hrs

Svetllana [295]4 years ago

3 0

Answer:

100

Step-by-step explanation:

sorry

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A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer because the average

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A car trip from New York to Cincinnati took 12.5 hours. The return trip by the same route took 1 hour longer.

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svetoff [14.1K]

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