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Sedbober [7]
3 years ago
9

Can someone please help me with this one question

Mathematics
1 answer:
erastova [34]3 years ago
7 0

the problem with this study is the fact that they used precise numbers

hope i helped:)

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Juan takes 15 hours to do a job that his father can do in 6 hours. If juan works for 4.5 hours before his father joins him, how
ad-work [718]
Work it exactly like the other one with Wilda and Karla.

Juan takes 15 hours to do a job ... he does 1/15 of it in an hour.
His father can do it in 6 hours ... he does 1/6 of it in an hour.

Juan works alone for 4.5 hours.  In that time, he does  4.5/15 = 0.3
of the job.  When his father joins him, there's only 0.7 of it to finish.

Working together, they do (1/15 + 1/6) = (2/30 + 5/30) = 7/30 of the job
each hour.

How many times do they have to do  7/30  of the job in order to finish
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(7/10) / (7/30) = 7/10 x 30/7 = <em>3 hours</em>.

Then they can knock off while it's still daylight, and go for a swim.
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3 years ago
What are these rounded to the nearest tenth help <br> 1)1017.36<br> 2)1139.82
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Answer:

1. 1017.4

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Step-by-step explanation:

Those the answers

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In 2 mins., a conveyor belt moves 300 lbs. Of recycle aluminum from delivery truck to a storage area. A smaller belt moves the s
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Answer:

1.8 minutes or 108 seconds

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The question tells us that the larger belt moves 300 lbs in 2 mins. And this is equal to 150 lb per minute

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Both belts will move at a rate of 166.667 lb per min.

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3 years ago
The vertex is at (-1,-3) move it to (8,10) on the coordinate grid.
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Right 9 spaces and up 13 spaces
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