In parallelogram ABCD, AB=7cm and the perimeter of ABCD is 30cm. What is the length of AD?

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml