A school board is interested in knowing how the teachers in the school district feel about the new professional development plan. They create a list of the 245 teachers in the district and randomly select 40 names from the list to survey anonymously. Which description matches each term?

the 40 randomly selected teachers
the list of all teachers in the school district
the 245 teachers in the school district
sample
arrowRight
population
arrowRight
frame

frame: the list of all teachers in the school district

population: the 245 teachers in the school district

sample: the 40 randomly selected teachers

Step-by-step explanation:

hope this helped !! :) #plato/edmentumfam

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: