the diagonals PR and QS of a rhombus intersect each other at point O. prove that 2(PQ) + 2(RS) + 2(RS)+ 2(PS) = 4 (2(OP)+2(OQ))

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

What ia the sum if the first 7 terms of the geometric series

What is the volume of a rectangular crate that has dimensions 9 inches by 9 inches by 1 feet? 1,458 in.3 121.5 in.3 1,012.5 in.3 36 in.3