Dora started measuring change in temperatures each hour in the evening as the temperature dropped heading into the night. The temperatures changes Dora recorded were: 15 degrees, 12 degrees, 12 degrees, 19 degrees, and 16 degrees. Express the total change in temperature as an integer.

x+y = 29, 5x + 2y = 100

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i'm guessing it was a multiple first option was the correct answer

u rich

step-by-step explanation:

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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is means division by fractions

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