Which expression is equivalent to r^9 over r^3

r^6

Step-by-step explanation:

In the laws of indices, it states that for division of indices of the same bases, there is a subtraction of indexes or powers.

For example, a^x/a^y = a^(x-y)

Therefore, r^9/r^3 = r^(9-3) = r^6

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.