Find the domain of the expression: -((18a^2b^2)/(5cd))/-((9ab^3)/(5c^2 d^4))
I can't seem to get it right, I've already tried a, b, c, and d not equal to 0 and it is still not right.

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Which of the following can be used to explain a statement in a geometric proof?