Discover Questions

Please explain how you got the answer to this one? Explain the much higher mobility of nitrate ( NO3-) than calcium (Ca2+) in soils.? Put the following equations into an augmented matrices form:
5x + 8y = 15
2x – 4y = 5? A rotating fan completes 1200 per min. What distance does the point move in one revolution on the tip of a blade, at a radius of 0.15m? What is the equation of the line that passes through the points (-3, 1) and (-5, 7) ?