In the figure to the right, EG = 12, EF = 2x – 3 and FG = x + 6. Find EF and FG.

Look at the picture for more:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .