An airline collects data on the number of trips families take in a given year. The following table is the probability distribution for X, the number of trips a family will take in a year. xn 0 1 2 3 4 pn 0.1 0.5 0.2 0.15 0.05 2400 families are in the company’s database as having subscribed to their email list. How many trips can the company expect out of these 2400 families?

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

angle efh= angle egh