A port hole on a freight ship has a radius of 18 inches what is the length of the insulating strip that encircles the window

Nine more than four times a number is the same as one less than twice the number. find the number?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

Proving the parallelogram diagonal theoremgiven abcd is a parralelogam, diagnals ac and bd intersect at eprove ae is conruent to ce and be is congruent to de