if x degree, 2xdegree,3xdegree,4x degree,140 degree and 160 degree are the angles of a hexagon, find the sizes of unknown angles.

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )