Please help! D; A recipe requires 1 3/4 cups of cheese to make 8 servings enchiladas. How much cheese for 12 servings?

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.