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True [87]
2 years ago
11

Can someone help me with this?

Mathematics
1 answer:
oksian1 [2.3K]2 years ago
5 0

Answer:

  • 85 hours
  • 10 2/3 ≈ 11 days

Step-by-step explanation:

We can treat this as a units conversion problem. Each multiplier is a fraction that has the same value in the numerator as the denominator, but expresses that value with different units. We choose to cancel units we don't want, and replace them with units we do want. Ultimately, we're evaluating the expression ...

  time = quantity/rate

  (4 mi²) × (640 ac/mi²) × (5 min)/(2.5 ac) × (1 h)/(60 min)

  = (4·640·5)/(2.5·60) h = 85 1/3 h

It will take about 85 hours to plant the farm.

__

At 8 hours per day, that is (85 1/3)/(8) = 10 2/3 days.

It will take about 11 days to plant the farm.

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So the first thing we have to do is to calculate for the dilation factor. Taking point G as the reference point, we can see that the distance of point G from rectangle W’X’Y’Z’ is 1.5 while the distance from rectangle WXYZ is (1.5 + 7.5), therefore the dilation factor to use is:

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<span>0.5 units</span>

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