In right triangle abc, a=76º, a=13, and ∠c is the right angle. solve the triangle.

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2