PL HELPPP there are 7 days in a week. What is the probability that today is a day that starts with the letter "T" or "W"?

3/7

Step-by-step explanation:

Two days start with "T" and one day starts with "W" so 3/7

1+2= 3        the 7 would be the denominator. and 3 would be the numerator so therefor it would be 3/7

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:

b

step-by-step explanation: