elizabethandrews523 elizabethandrews523

11-10-2020
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P varies directly as the cube root of Q. if P=25 when Q= 125, find the value of Q when P= 15

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victorbakare victorbakare

11-10-2020

Answer:

27

Explanation:

P=k³√Q

25= ³√125k

25=5k

k=5

law connecting = P=5³√Q

when P=15, Q=?

15= 5³√Q

15/5=³√Q

3=³√Q

cube both sides

3³=(³√Q)³

cube cancels cube root

3³=Q

27=Q

Q=27

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