Each day ,steven walked 1/2 mile more than the previous day. the first day he walked 1/2 the second day he walked 2/12, the third day he walked 3/12 mile. on which day did the sum of his walks total at least 1 complete mile?

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

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