Set a proportion. They are similar triangles.
Answer:
38
Step-by-step explanation:
38
There are nine possible combinations as follows: bb, bc, bt, cb, cc, ct, tb, tc, tt, each having a probability of 1/9. The four combinations with a cab exactly one time are: bc, cb, ct, tc. Therefore the probability that she'll use a cab exactly one time is: 4/9.
Answer:
a=3
Step-by-step explanation:
