Evaluate the expression (5x^2)^3/(10y)^4 for x=10 and y=5
a.15/128
b.60
c.5/256
d.20
can someone show me how to do this

Pay attention to the procedure:
(5(10)^2)^3/(10(5))^4. What we need is plug in the corresponding x and y values Then you have to do x squared before you multiply it by 5 like this: (5(100))^3/(10(5))^4 Now solve for what is in the top parenthesis. (500)^3/(10(5))^4 500^3=125000000 Now work on the denominator. Do what is inside the parenthesis first 10*5=50 Now (50)^4=6250000 Now divide the numerator and the denominator. 125000000/6250000 Which equals 20, Please check if I'm wrong but I think this is what you need 

1. 3/6 or 1/22. 1/123. 1/84. 1/105. 2/12 or 1/6