sm908361
25.03.2021 •
Mathematics
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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Ответ:
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
Ответ:
I think the answer is C but I could be wrong. I am not really sure. Sorry!
Step-by-step explanation: