Suppose there are 15 people in a room. each of those 15 shakes hands exactly once with everyone else. how many handshakes take place?

What's the surface area of a rectangle if it's 5 by 10 in

After leaving the runway, a plane's angle of ascent is 15 degrees and its speed is 272 feet per second. How many minutes will it takefor the airplane to climb to a height of 14,000 feet? Round anwer to two decimal places.

A student has some? $1 and? $5 bills in his wallet. He has a total of 12 bills that are worth?$40. How many of each type of bill does he? have?

If the value of r is not significant, what can be said about the regression line?

At a shoe store, shoes are sold at $49.35, which is 3/4 of the original price. What is the original price of a shoe?

A triangle has an angle that measures 40°. The other two angles are in a ratio of 11:17. What are the measures of those two angles?

Solve the fórmula d = rt for t

What are the intercepts of y = 4x - 2? (2, 0) and (0, 0.5) (2, 0) and (0, 5) (2, 0) and (0, - 2) (0.5, 0) and (0, - 2)

Identify the property shown (3x5) x10=3x (5x10)

Round to the nearest thousand:3589