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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
1. 3 answers
2. 345 views
Two right-angle triangles △ABC and △BCD, have side BC in common, the hypotenuse of △ABC is side AB and the hypotenuse of
1. 1 answer
2. 390 views
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
1. 1 answer
2. 520 views
to increase revenue, a sports store has decided to increase the cost of a baseball glove. they expect that for every 5$ increase
1. 1 answer
2. 407 views
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
1. 2 answers
2. 624 views
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
1. 2 answers
2. 1,049 views

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