Evaluate the following expression when b = 4:56 - 2 + 7 * 2 1. 50

2. 25

3. 32

4. 4

squares, rhombus, rectangles

a. is correct

how many friends does he have? i think some of the information got cut off in the problem.

in counting the number of heads in 4 coin flips, the probability that we get exactly one head is the probability that we get anyone of the following 4 outcomes: httt, thtt, ttht, or ttth. each has probability 1/16, so the probability to get exactly one head in 4 flips is 1/16 + 1/16 + 1/16 + 1/16 = 4/16 = 1/4.