if r varies directly as s and inversely as the square of u,and r=2 when s=18 and u=2,find:
a. r when u=3 and s=27.
b. s when u=2 and r=4.
c. u when r=1 and s= 36.​


Sagot :

Answer:

k = 4/9

r = 4/3

s = 36

u = 4

Step-by-step explanation:

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