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W is partly constant and partly varies inversely as the square of t. when w=24, t=4 and when w=18, t=2. i. determine the law connecting w and t ii. find t when w = 46

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w = a+bt^2
using the given values,
a+4b = 24
a+2b = 18
solve for a and b, and then solve a+bt = 46

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