Bill has 50 dollars. his friend has 40 dollars. how many more does bill have?

10 More Dollars.

Step-by-step explanation:

Bill had 50 dollars and his friend had 40 so you subtract their money. You get the answer of 10 dollars. $10.

true? is that what you're asking or do you mean something else?

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