Which choice is equivalent to the expression below? √-216 a. 6i√-6 b. 6i√6 c. -6√6 d. 6√6 e. -√216

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√, where h is the height (in feet) above the transmitter. estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. round your answer to the nearest tenth.