4k squared = 100 solve for k

Solve the triangle. a = 21°, c = 105°, c = 5

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?