F90 = x, then x = 90. a addition property b division property c distributive property d multiplication property e reflexive property f subtraction property g substitution property h symmetric property i transitive property

It is H because according to the Symmetric Property, which states that if a=b, then b=a. This is modeled in the statement: If x=90, then 90=x.

your answer is the last one

step-by-step explanation:

divide the length of a'c' by the length of ac to get a scale factor of two

& then reflect vertically (over the y-axis)

so your answer is dilation by a scale factor of 2 followed by reflection over the y-axis