If you flip a coin ten times, how many diffrent sequences of heads and tails are possible

What is the distance between point a and b

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft