An aircraft is on approach to an airport and is guided by electronic signals from points A and B at either end of a runway. The angles of elevation from the beacons on the horizontal runway to the aircraft are 30 and 20. The length of the runway is 2 kilometers. Calculate the distance from the aircraft (C) to the start of the runway (A)

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3