The perimeter of a regular hexagon is 42a + 18.
write an expression for the length of one of its sides.

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Equation for the calculation double 2 and then add 5

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.