¿hoy vamos de excursión con la escuela y nos ha tocado hacer los bocadillos para toda clase. Si para hacer los bocadillos mis 4 hermanos gastamos 2 barras de pan ,¿ cuantos barras de pan necesitaremos para hacer los bocadillos de los alumnos que hay en clases?

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:

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

18.75 gallons

step-by-step explanation:

0.038

step-by-step explanation: