What percent of 55 is 80

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points

Interpret the following expression (5y^2-7)^3/(2y)^2