it is given that X varies inversely with Y and x = 9 when Y = 21 equal to 21 find the value of x and y is=7
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Answer:
x=27
Step-by-step explanation:
X varies inversely with Y. This means: X α 1/Y
Thus, XY = K
We are given that when X = 9, Y = 21.
Hence, XY = 21*9 = 189
When Y = 7
X * 7 = 189
X = 189/7
X = 27
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