Calculate s4 for the sequence defined by

The correct answer option is 36.

Step-by-step explanation:

We know that,

the sum of the first n terms of an Arithmetic Sequence is given by:

where is the number of terms,

is the first term of the sequence; and

is the first term of the sequence.

So for ,

Putting these values in the formula to get:

Therefore, the 4th term of the given sequence is 36.

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

idk

step-by-step explanation: