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an arrow is shot from a castle tower. its height above the ground is given by the equation h = -5t^2 + 15t + 20 where h is the height of the arrow, in meters, and t is the time, in seconds, after the arrow was released

an arrow is shot from a castle tower. its height above the ground is given by the equation h = -5t^2 + 15t + 20 where h is the height of the arrow, in meters, and t is the time, in seconds, after the arrow was released what is the initial height of the ar...

to increase revenue, a sports store has decided to increase the cost of a baseball glove. they expect that for every 5$ increase in price from the current price of 40$, three fewer gloves will be sold per week than the current 60 per week. what is the sel...

a kite is 50m vertically above the ground. the kite string makes an angle of 61 degrees with the ground. how long is the kite string to the nearest tenth of a meter

Two right-angle triangles △ABC and △BCD, have side BC in common, the hypotenuse of △ABC is side AB and the hypotenuse of △BCD is BC. Given that AB = 18cm, CD = 6cm, and ∠A = 23°, determine the measure of θ = ∠BCD to the nearest degree.

a. A chemist needs 200ml of a 1.5% acidic solution. Two other acidic solutions - 0.8% and 3.2% - are available for mixing. How much of each solution should be mixed to produce the desired solution? b. A hotel has 260 rooms. Some are singles, and some are...