kikipie489
30.10.2021 •
Mathematics
Z
varies directly as the square of
x
and inversely as
y
.If z = 18 when x = 3 and y = 3. Find z when x = 8 and y = 4.
Solved
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Ответ:
z = kx/y2
6 = k(2)/42
6 = 2k/16
6 = k/8
48 = k
z = 48(10)/62
z = 480/36
z = 13 1/3
Ответ: