Which answer is the best explanation for how to check to see that the difference has been calculated correctly for this problem?
76.5 – 4.32 = 72.18
a.
add the first and second numbers to get the difference.
b.
add the difference to the second number to get the first number.
c.
subtract the second number from the difference to get the first number.
d.
add the first number and the difference to get the second number.

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?

Analyze the diagram below and complete the instructions that follow. how to find tan