Which of the following statements would be appropriate to investigate a claim that the mean speed of drivers through the city is below the posted limit of 45 miles per hour? The null hypothesis states the mean speed of drivers in this city is less than 45 miles per hour.
The null hypothesis states the mean speed of drivers in this city is greater than 45 miles per hour.
The alternative hypothesis states the mean speed of drivers in this city is greater than 45 miles per hour,
The alternative hypothesis states the mean speed of drivers in this city is less than 45 miles per hour
The alternative hypothesis states the mean speed of drivers in this city is greater than or equal to 45 miles per hour,

ok

step-by-step explanation:

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:

answer   download the app called socratic on your phoner:

step-by-step explanation:

he will have 300 because he is really broke and 300 is in his imangine

step-by-step explanation: he ehe heh step by the thy