Johns house is 12 miles away from school he is 2/3 the way there how many miles has he walked

The area of square garden is 300m squared. how long is the diagonal?

How many solutions does the nonlinear system of equations graphed below have?

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).