Acertain truck weighs 2 metric tons. a person weighing 60 kilograms gets in the truck, followed by a 70 kilogram person. how many kilograms does the truck weigh with both people inside?

Easiest way is to find how many kilograms 2 tons is. Every ton is equal to 1,000 kilograms. From there you can simply add 2,000+70+60 which should be 2,130 kilograms.

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:

move it to the other side

step-by-step explanation: