Recent survey by Austin Corp Inc. concludes that only 30% of defective items sold on a Frenzy Friday are returned by the customers. If 5 defective items are sold by the shop, calculate (a) The probability that all 5 items will not be returned by the customer.

(b) The probability that more than one items will be returned by the customer.

(c) The mean number of items returned by the customer.

Solve the system of equations. y= 2x y= x^2 - 15

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)