In exercises 25-30 determine the number of real solutions of the equation. 25) x^2-6x+10=0
26) x^2-5x-3=0
27) 2x^2-12x=-18

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Which number completes the inequality? 2/3 < _ < 7/9