Find the second derivative of xy +y^2 = 1.
the first derivative is -y(x + 2y)^(-1).

In the surface area formula for cylinders which expressionrepresents the lateral area

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years