Mathematics, 06.01.2020 23:31 michael1295
Aone-million-liter pond is contaminated by a chemical pollutant with a concentration of 20 g/l. the source of the pollutant is removed, and pure water is allowed to flow into the pond at a rate of 1900 l/hr. assuming that the pond is thoroughly mixed and drained at a rate of 1900 l/hr, how long does it take to reduce the concentration of the solution in the pond to 30% of the initial value?
Answers: 3
Mathematics, 21.06.2019 19:00
Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct
Answers: 1
Mathematics, 21.06.2019 19:30
In the given triangle, ∠aed ∼ ∠ abc, ad = 6.9, ae = 7.2, de = 5.2, and bc = 10.2. find the measure of bd and ce. round your answer to the nearest tenth.
Answers: 2
Aone-million-liter pond is contaminated by a chemical pollutant with a concentration of 20 g/l. the...
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