Which two points on the number line represent numbers that can be combined to make zero? CO
А
B
C D
-9-8-7-6-5-4-3 -2 -1 0 1 2 3 4
5 6 7 8 9
OB and D
O A and B
O C and D
O A and C

Aletter in the word electric is chosen at random. complete each sentence. there are possible outcomes. the theoretical probability that a vowel will not be chosen is the ratio . the theoretical probability that the letter n will be chosen is .