Mathematics
notagenius
2016-04-13 06:13:06
The variable Z is directly proportional to X, and inversely proportional to Y. When X is 12 and Y is 18, Z has the value 2. What is the value of Z when X = 19, and Y = 22
ANSWERS
favgt
2016-04-13 08:02:41

z = kx/y 2 = (k *12)/18 multiply both sides by 18 36 =  k * 12 divide both sides by 12 3 = k z = 3x/y z = (3 * 19)/22 z = 57/22

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