Please help. Simplify the expression using properties of exponents.
25a-5b-8/5a^4b
^ this is a fraction
A. 5ab^7
B. 5a^9b^9
C. 5/ab^7
D. 5/a^9b^9

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39