Find the point of intersection of these lines: x+y=5, 2x–y=16 and x+2y=3.

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0