The quadrilateral whose diagonals bisect at right angles is a (A) rhombus
(B) rectangle
(C) trapezium
(D) parallelogram

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Find the distance between (0,5) & (-4,2)