Answer the questions no work needed

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13