Use complete sentences to describe why √ -1≠-√ 1

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Write an expression that represent sarah’s total pay last week. represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|