Tamara is going to the laundromat. she needs 6 quarters for each of the 4 machines that she is using. how many dollar bills must she insert into the change machine to have enough quarters to do her laundry?

she will insert 6 dollars into the machine

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