The law of cosines is used to find the value of m. Triangle L N M is shown. The length of L N is m, the length of N M is 18, and the length of M L is 27. To the nearest whole number, what is the value of m? 13 14 43 45

Answer is B or 14.

Step-by-step explanation:

Did the math and got it right on Edge 2021

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)

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