A triangle has side lengths of 5x + 10 cm, 6x - 3y cm, and 8 - 4y cm. Write an expression for the perimeter of the triangle.
(Will give brainliest correct answer)

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Which of the following is the shape of a cross section of the figure shown below

If the discriminant if a quadratic equation is 4 which statement describes the roots?