(their is a picture) i am desperate (part b)

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

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?