Find the following System by the cramer's rule 4x-2y=8 3x+y=-4

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Graph y = -|x| + 2. click on the graph until the correct one appears.