Is abc with vertices a(-2 -5) b(2, 0) and c(-1, -4) a right triangle?

abc is a right triangle because ab | bc
abc is a right triangle because bc | ac
abc is a right triangle because ab | ac
abc is not a right triangle

In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18