teagan4christ teagan4christ

30-01-2017
Mathematics

Answered

Suppose P varies directly with d , and p=7 when d=3.

What is the value of d when p=28?

A140/3
B12
C16
D4/3

Verified Answer :

apologiabiology apologiabiology

30-01-2017

p vaires directly with d means
p=kd
7=k3
divide by 3
7/3=k

28=(7/3)d
times 3/7 both sides
84/7=d
12=d

B

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