The coordinates of the vertices of triangle QRS are Q (1,-2), R (1,9), S (6,-4). What is the length, in units, of the line segment that connects
vertex Q to vertex R?
A 11
B 9
C7
D 5

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

What is the probability of rolling a single die greater than 4

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?