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Naddik [55]
3 years ago
11

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

Mathematics
1 answer:
bixtya [17]3 years ago
3 0
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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