What is the common difference in the following arithmetic sequence? 7, 3, –1, –5, *`–3 *–4 *4 *12

The common difference of the arithmetic sequence is -4.

Step-by-step explanation:

The common difference (d) of an arithmetic sequence is the difference between two consecutive terms.

The arithmetic sequence is 7, 3, –1, –5, ....

From the above mentioned concept, the common difference is given by

Therefore, the common difference of the arithmetic sequence is -4.

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