Acompany used about 7.4 x 105 sheets of paper in a month. of the paper used during the month, the accounting department used about 8.9 x 103 of the sheets. about how many sheets of paper were used by other departments during the month?

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