If a=(-5,-4,3) , b=(6,-2,-7), c=(-2,3,4) find 2a-b-0.5c

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2