Circle OO shown below has a radius of 25 inches. To the nearest tenth of an inch, determine the length of the arc, xx, subtended by an angle of 87^{\circ}87 ∘ .

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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21

jk it's 20

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(0.2)+(-8)=0.3+-3+0.3m is the equation i guess? ?

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there is no points to select.

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