Atabletop is in the shape of a trapezoid. the lengths of the trapezoid's parallel sides are 48 inches and 40 inches. the height of the trapezoid is 24 inches. what is the area of this tabletop? 112 in² 1056 in² 2112 in² 23,040 in²

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Find the value of the cosine for angle a

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?