Adam wants to tip the room service person 15 percent of the food bill of $165.56. how much should he tip?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.