What is the mechanical advantage of a screw with a pitch of 0.05 inches and a head with a diameter of 0.30 inches if you turn it with a screwdriver whose diameter is 1.5 inches? I think the equation to solve this would be:

Circumference witch is equal to 3.1416 x the Diameter witch is 1.5 inch. ÷ by the pitch witch is 0.05 inch.

S... the answer would be 94.248?

Correct me if i'm wrong because i really don't know.

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?