What is the simplified form of the quantity y−squared plus 7y plus 12 over the quantity y−squared minus 2y minus 15?

Three coins are flipped. what is the probability that there will be at least two tails?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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?