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Vedmedyk [2.9K]
3 years ago
8

The ideal weight of a nickel is .17637 ounce. A bank teller weighs a roll of nickles to ensure there are 40 in the roll. Write a

n inequality that BEST describes the allowance for an margin of error of .015 of an ounce in the total weight (W) of the roll. The weight of the wrapper is not part of the problem.
a) .16137≤W≤.19137.16137≤W≤.19137

b) 7.0398≤W7.0398≤W

c) 7.0398≤W≤7.06987.0398≤W≤7.0698

d) W≤7.0698W≤7.0698
Mathematics
1 answer:
icang [17]3 years ago
8 0
I believe your answer is C
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2 years ago
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--------------------------------------

DIRECT PROPORTION EXPLAINED:

Say a football costs £7.50. If you buy one football you'll have to pay out £7.50, but if you you buy two footballs you'll have to pay out £15.00. Therefore the cost of the football(s) is directly proportional to the amount of footballs you buy. C=cost, f=football(s) and C<span>∝f, therefore C=kf, but as k=7.5, C=7.5f.

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