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Ahat [919]
3 years ago
13

Math question help me please

Mathematics
1 answer:
nignag [31]3 years ago
3 0

Answer:

he 8 times

Step-by-step explanation:

so he mows 5 time his sister which is 9 but it says 3 for the sister instead of 4 making it 8

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The width of a rectangle is 2/5 its length. Find the dimensions if the perimeter is 42<br> meters.
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The formula to find the perimeter of a rectangle is P= 2(l+w). By substituting what we now knowin to the equation:

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•42= 2(7/5l). Multiplying 7/5 by 2.

42= (14/5l). Multiplying both sides by the reciprocal of 14/5, which is 5/14, to get l by itself.

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Now that we now know the value of l, we know that the length is 15m. To find the width of the answer, we then multiply 15 by 2/5, which equals 6. Therefore, the only third option is correct because the length is 15m and the width is 6m.

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Step-by-step explanation:

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