In the proof of the law of cosines, the equation c^2=h^2+(b-x)^2was created using the pythagorean theorem. which equation is a result of expanding (b-x)^2? a. c^2=h^2+b^2-x^2 b. c^2=h^2+b^2-2bx+x^2 c. c^2=h^2+b^2+x^2 not d two construction workers, tyrone and diego, are standing 15 yards apart, looking up at a piano hanging between the two men from a crane. tyrone is staring at the piano with an angle of elevation of 65°, and diego is looking up with an angle of elevation of 77°. what is the distance between tyrone and the piano? round the answer to the nearest tenth. 9.0 yd 16.1 yd 22.1 yd 23.7 yd

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes