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Len [333]
1 year ago
14

If q is inversely proportional to r squared and q=30 when r=3, find r when q=1.2

Mathematics
1 answer:
beks73 [17]1 year ago
4 0

Answer:

r = 3

Step-by-step explanation:

q = k / r^{2}

k = qr^{2} = 1.2 x 3 x 3 = 10.8

q = 10.8/r^{2}

1.2 = 10.8/r^{2}

r = \sqrt{10.8 /1.2} = 3

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