RR' = 12. What is the length of RZ?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?