Length of hypotenuse

Jorge planted flowers in his garden he planted one row of 12 tulips and one row of 36 daisies george's friend kylie has a garden with 75 flowers in it kylie's garden only contains tulips and daisies. is it possible for kylie‘s garden she have the same ratio of tulips to daisies as george's garden?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

When y’all answer can y’all explain too !