A spinner with seven equal - sized sections was used to play a game. It was used 250 times in the first game. Of those 250 times the arrow landed on 7 a total of 64 times. The same spinner was used 178 times in the second game. What is the probability of landing on 7 in the second game, based on the results of
the first game?

question is incomplete.

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

the answer is 13 cm