What is the answer to -1+5x-9(-2+5x)

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps