8. Sarah polled 80 people who live in her town. 6 of them said they will visit art exhibition. The number of people who visited exhibition was 1,200. To the nearest whole number, what is the best
estimate of the population of Sarah's town?

5y

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq