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Advocard [28]
3 years ago
9

N^2=18n+40 Using complete the square method

Mathematics
1 answer:
____ [38]3 years ago
7 0
Y=20 and y= -2 bc you subtract 18n+40 into n^2 and simply that into (y-20)(y+2) and equal them to 0. y-20=0 and y+2=0 and subtract/add both side and that’s how you get y=20 and y=-2
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lord [1]

Answer:

Area = 87.9646  sq. units  from A = 28*π  sq. units.

However I cannot see this in your answer list, since the numbers look all jumbled.  Choice A. looks close to it, since there is a 28...

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