isaiahbass56 isaiahbass56

25-03-2021
Mathematics

contestada

If y varies jointly as x and z, and y = 36 when x = 9 and z = 12, find y when x = 18 and z = 21.

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sassyvet sassyvet

25-03-2021

Answer:

y = 126

Step-by-step explanation:

first find the constant K

y=kxz

126= K x 9 x 12

k = 1/3

then subs the value of k

y= kxz

y= 1/3 x 18 x 21

y = 126

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