What is the lcd or lcm of these following: 20 7/10 20 3/4 18 9/10 20 18/25

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge