PLEASE HELP ME ASAP ILL MAKE U THE BRAINLIEST IF U ANSWER THESE QUESTIONS PLEASE HELP ME! ;-;

In circle M, ABC has been inscribed. It is known that AB = AC, DC ⊥ AB, and m ∠DCB = 23 deg. Find:

(a) the measure of BDC

(b) the measure of DAC

Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

The equation of a circle is (x + 4)2 + (y + 6)2 = 16. determine the length of the radius. 10 4 16 8 my flower basket delivers flowers within a 20 mile radius of their store. if this area is represented graphically, with my flower basket located at (5, 2), what is the equation that represents the delivery area? (x - 2)2 + (y - 5)2 = 20 (x - 5)2 + (y - 2)2 = 20 (x + 5)2 + (y + 2)2 = 400 (x - 5)2 + (y - 2)2 = 400

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?