PRE-CALC What is the length of the major axis of the ellipse shown below?
(x - 1)^2/9 + (y+5)^2/16=1

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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?

Which expression is the factorization of x^2+10+21