Nina’s dog eats 1/6 lb of dog food twice a day. if nina buys a 20 lb bag of dog food how many days will the bag feed her dog? how do you get the answer?

60 days

Step-by-step explanation:

Step 1: First, since it is 1/6 pound twice a day, multiply by 2

1/6 x 2 = 1/3

Step 2: Divide 20 by 3 to get days that bag will feed the dog

20 ÷ 1/3 = 60

The bag will feed Nina's dog for 60 days.

I'm always happy to help :)

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: