The parallelogram height is 1 and 1/2 times the base length and the base length is 6

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

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How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.