Every year, around 25,000,000 kilograms (kg) of hair is cut in the United States. Each kilogram of hair contains about 0.0002 kg of zinc, and each kilogram of zinc is worth about 4 dollars. How many dollars worth of zinc is contained in hair cut in the US?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.