In the straightedge and compass construction of the perpendicular line below, how do you know that AB l CD?

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

If bradley saves for 4 weeks, what is the total amount of money he will have saved?

Adolphin jumps from 5 feet below the surface of the sea. jane wrote -5 to represent the death from which the dolphin jumped. what does zero represent in this situation?