The temperature of a city changed by −15 degrees celsius over a 5-week period. the temperature changed by the same amount each week.
write an expression to show the average change in the temperature of the city each week. simplify the expression and explain, using words, what your answer means

(-15) / 5  

(-15) / 5 = -3 This means that each week the average change in temperature was -3 degrees Celsius.

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