Help pls 6th grade math

All of them are correct except for the last one which is incorrect

Step-by-step explanation:

All you need to substitute the answers given for "r" and see if its less than or equal to 2

- 3.5 2 Correct (negative numbers are always smaller than a positive number)

- 2 2 Correct (negative numbers are always smaller than a positive number)

-1 2 Correct ( negative numbers are always smaller than a positive number)

0  2 Correct ( 0 has a value much more less than the value of 2)

2 2 Correct (they both have the same value as "2")

4  2 Incorrect ( 4 has a much more greater value than 2, therefore this is incorrect)

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