A class found a report suggesting that teenagers' foot lengths are approximately normally distributed with a mean of 23 cm and a standard deviation of 2.6 cm. They wondered if this held true at their school, so they
took a random sample of n = 9 students. The mean foot length of students in their sample was ä = 24.6 cm.
To see how likely a sample like theirs was to occur by random chance alone, the class performed a simulation.
They simulated 50 samples of n = 9 lengths from a normal population with a mean of 23 cm and standard
deviation of 2.6 cm. They recorded the mean of the lengths in each sample. Here are the sample means from
their 50 samples:

the answer for this question is 38

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:

1.0

step-by-step explanation:

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1