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Mathematics, 12.12.2020 16:00 evere11605
A boat can travel at speed (a) in still waterIt travels upstream in a river against a current with speed (c) for 4 hours, traveling 18 miles. The boat then returns with the current to its starting place in 2 hours. This can be modeled by the following system of equations
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Mathematics, 21.06.2019 16:30, leenzazou98241
The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.
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A boat can travel at speed (a) in still waterIt travels upstream in a river against a current with s...
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