Evaluate each of the numerical expressions below. 1. 42 +9
2. (5 + 8)
PLEASE HELP ITS DO RN

1. 51

2. 13

Step-by-step explanation:

1. 42 + 9

42 + 9 = 51

2. (5+8)

5 + 8 = 13

The probability of the worker does not write personal "to-do" lists given that he reads e-mail while talking on the phone is P=0.8.

Step-by-step explanation:

a) The worker does not write personal "to-do" lists () given that he reads e-mail while talking on the phone ():

If it is given that he reads e-mail, we pick out of the 54% of the workers. In this group of workers, 20% write to-do list, so it means that 80% doesn't write to-do lists.