57 cubic decimeter equivalent to ? deciliter
I am in Secondary 3.
Is is the same as before? (19 liter equivalent to ? cubic decimeter)

57 cubic decimeter equivalent to 570 deciliter

19 liters equivalent to 19 cubic decimeter

Step-by-step explanation:

Let us revise the change of some quantities

Lets solve the problem

we need to convert 57 cubic decimeter to deciliter

Let us use the ratio method

1 cubic decimeter = 10 deciliters

→  decimeter³  :  deciliter

→  1                    :  10

→  57                 :  x

By using cross multiplication

∴ 1 × x = 57 × 10

∴ x = 570

57 cubic decimeter is equivalent to 570 deciliter

We need to convert 19 liter to cubic decimeter

Let us use the ratio method

1 liter = 1 cubic decimeter

→  liter  :  decimeter³

→  1       :  1

→  19     :  y

By using cross multiplication

∴ 1 × y = 19 × 1

∴ y = 19

19 liters equivalent to 19 cubic decimeter

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:

jeff jeff

step-by-step explanation: