A housewife purchase a video recorder with a cash price of $2700 under hire purchase terms. She paid an initial deposit of 20% of the cash price and interest at 18% per annum on the outstanding balance is changed. The amount payable is paid in 12 equal monthly installment

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2