how is the measure of an inscribed angle (or one formed by a chord and a tangent) and its intercepted arc related?

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then, the two had the same amount of money. how much money did each have originally?

Abcd is a square. what is the measure of angle bac

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?