End of topic form test form A module 3

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?