PLSS HELP I NEED IT RN Anika had several marbles. She gave 12 of them to her
brother. For her birthday, grandmother gave Anika twice as many
marbles as she had before she shared with her brother. How many
marbles did Anika have at the beginning if now she has 48 marbles?

wouldnt it be 24 since 24 times 2 equals 48?

Step-by-step explanation:

correct me if i'm wrong lol

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:

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points