Find a solution to the following system of equations. –5x + 2y = 9 3x + 5y = 7 a. (0, 1) b. (–9, 7) c. (–1, 2) d. (1, 7)

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.