This figure shows quadrilateral ABCD. The two diagonals of ABCD, BD and AC, are perpendicular to one another, and BC = DC. which theorem of triangle congruency can be used to proved that BEC = DEC

For what values of x is x2 + 2x = 24 true?

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?