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Mars2501 [29]
3 years ago
12

What is a better price 16 pencils for $2.78 or 26 pencils for $3.99

Mathematics
2 answers:
AlekseyPX3 years ago
8 0

26 pencils for 3.99,because 2.78 / 16 = 0.17,while 3.99 / 26 = 0.15. The reason the smaller answer is correct is because they represent the cost for each pencil.

Mama L [17]3 years ago
5 0
16 pencils for $2.78
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Answer:

3053.5517 cm^3 ; 1/8

Step-by-step explanation:

Given the following :

Volume (V) of sphere = (4/3)πr^3 where r = radius

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V = (4/3) × π × 9^3

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V = 3053.5517 cm^3

When diameter(d) is reduced to half

d = d/2

Volume (V1) of sphere with diameter 'd' =

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Volume (V2) of sphere with diameter 'd' reduced to half, d = d/2, d/2 * 1/2 = d/4

V2 = (4/3)π(d/4)^3

V1 / V2 = [(4/3)π(d/2)^3] / [(4/3)π(d/4)^3]

V1 / V2 = (d/2)^3 / (d/4)^3

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3 years ago
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