Negative 1 minus positive two minus positive three minus positive four

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

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?