Abase angle of an isosceles triangle measures 30, and the length of one of the legs is 12. what is the length of the altitude drawn to the base of the triangle?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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

How do i simply this radical expression?