If is valid : a ²- b ² = 117 and a - b = 3, then what is the value of the expression a + b ? A.31
B.33
C.36
D.39​

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)