Acircle could be circumscribed about the quadrilateral below true or false?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

What is not true about kl and mn? what is mn? (show )