10. Sylvie needs $90.50 for a concert ticket. She already has $8 and she can earn the rest by working 7 hours at her job. Fill in the boxes to write an equation that can be solved to find h, Sylvie's hourly earnings.​

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i hope this : )

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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x+14

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the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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