Which expression is equivalent to sin^2x-sin x-2/sin x-2

Mt. McKinley is the highest mountain peak in North America with an elevation of 20,320 feet what is the value of digit 3 in 20,320

The volume of a sphere with a radius of 5 (in terms of pi) is?

Two passenger trains traveling in opposite directions meet and pass each other. Each train is 1/12 miles long and is traveling 50 mph. How many seconds after the front cars of the trains meet will their rear cars pass each other?

What are the numbers for Pi (Urgent)

What is the sum of the interior angles of a polygon that has 9 sides?

16-9 1/5 show how you got the answer

A box of marbles can be shared equally among 6,7, or 8 students with 4 marbles left over each time. what is the least possible number of marbles In the box?

Analyzing quadrilaterals & drawing figures

Solve for x. x + 3 = Sqrt 4x+17

What is the factorization of 3x^2-8x+5