Without graphing, show that (-1, 2), (4, -3), and (5,0) are vertices of a right triangle. Hint: What do you know about the slopes of perpendicular lines?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?