Ahouse is purchased in 1990 and sold in 2002 for a profit of $45 000. if the ratio of cost price to profit is 21: 5, find:

a) the cost price

b) the selling price

c) the ratio of cost price to selling price

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)