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kirill [66]
2 years ago
12

If r is directly proportional to the square of s and r = 72 when = 12, find r when s = 8.?

Mathematics
1 answer:
Norma-Jean [14]2 years ago
6 0

Answer:

r2=48

Step-by-step explanation:

r1=72

s1=12

s2=8

r \alpha s \\  \frac{r1}{s1}  =  \frac{r2}{s2}  \\  \frac{72}{12}  =  \frac{r2}{8}  \\ r2 = 8 \times \frac{72}{12}  = 48

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