One angle of a right triangle measures 55°. what is the measure of the other acute angle?

35°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 2 given angles and subtract from 180

acute angle = 180° - (90 + 55)° = 180° - 145° = 35°

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:

there is no question content here, but you for the free points! : d