Brad can either use a 20% off coupon or a $20 mail-in-rebate to buy a set of wireless headphones. The headphones originally cost $139. Which is the better incentive to buy the headphones, and what is the savings?

Which of the following statement about pascal's triangle are true?

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?