In the diagram below, de and ef are tangent to o what is the measure of dgf

we know that

The inscribed angle measures half that of the arc comprising

in this problem

m∠DGF -----> is a inscribed angle

m∠DGF=

we have

substitute

m∠DGF=

we know that

Find the measure of arc DGF

therefore

the answer is

a) the measure of inscribed angle m∠DGF is

b) the measure of arc DGF is

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answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.