Question

please open pic and answer the question​

Answer 1

Answer:

(4/9)^-10 *( 18/7)^-10 =( x/y)^-10

[(4/9)*(18/7)]^-10 = (x/y)^-10

(4*18/9*7)^-10 = (x/y)^-10

(4*2/7)^-10 = (x/y)^-10

(8/7)^-10 = (x/y)^-10

so.. 8/7 = x/y

x/y == 8/7 answer

Answer 2

Answer:

(72/63)^-10=(x/y)^-10

x/y=72/63=8/7