A printer cartridge with 3 4 ⁄5 milliliters of ink will print off 1 ⁄3 of a box of paper. How many milliliters of ink will it take to print an entire box?

11  2/5 mm³

Hi there !

3  4/5mm³ = (3×5 + 4)/5 = (15 + 4)/5 = 19/5 mm³

19/5 mm³ 1/3 box

x mm³ 1 box

x = 19/5×1 : 1/3

= 19/5 × 3/1

= 19×3/5

= 57/5

= 11  2/5 mm³

Good luck !

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:

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