What is the sum of 12 – 5i and –3 + 4i? A. –16 + 63i
B. 9 – i
C. 9 – 9i
D. 15 – 9i

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')