Lots of
given the figure below, if m∠bac = 64° and m∠cba = 56°, answer the following:
part i: find the m∠dec.
part ii: explain the steps you took to arrive at your answer.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

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?