A muffin recipe calls for 5 ⅓ teaspoon of vanilla extract for 4 dozen muffins. We are only making 12 muffins. How much vanilla extract does we need?

Please explain how you got your answer.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?