Let f(x)=x-2 and g(x)=x2-7x-9.find f (g-1)

Let f(x)=x-2 and g(x)=x2-7x-9.find f (g-1)  F(x)=x-2 G(x)=x^2-7x-9  G(-1)=(-1)^2-7(-1)-9        = 1+7-9 G(-1)=-1  Since g(-1)=If (g(-1))=f(-1)  F(g(-1))=(-1)-2 F(g(-1)=-3

25/4

step-by-step explanation:

call segment cd's length x. because dc and ab are parallel, angle acd and cab, so triangles adc and abc are similar and we can set up the equation x / ac = ac / ab, or x / 5 = 5 / 4 and x = 25/4.

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