Plz help me I need this done by this morning plz plz plz help me!! It’s circumference of a circle, im usually rlly good at these but I don’t get it. A bicycle trail in the shape of a circle has a diameter of 3 miles. Michelle biked around the trail 4 times. About how far did Michelle bike?

37.68 miles

Step-by-step explanation:

First find the circumference

C = pi *d

C = 3.14 *3 miles

C =9.42 miles

Michelle went around 4 times,so multiply the circumference by 4

4 * 9.42 miles

37.68 miles

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: check all that apply, where the options?

step-by-step explanation: