1. Find the common difference and find the 75th term of the arithmetic sequence: 3, 6, 9, 12,

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Step-by-step explanation:

Arithmetic sequence

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First step, find its difference

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So, we get

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Finally, Let's find the 75th term

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