The value ‘a’ in the equation is the distance from the center to a vertex of an ellipse. (The point furthest from the center). What is a The center is (-1, -2)

The horizontal ellipse equation: (x-h)^2/a^2 + (y-h)^2/b^2=1

Please help me !!! And do not put a link or ill report you, type the answer.

Ihave trouble finding the nth term of a linear sequence

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]