6· [10pts] a 300-gal tank initially contains 100 gal of brine containing 30 lbs of salt. brine containing 1 lb of salt per gallon enters the tank at the rate of 6 gal/s, and the well-mixed brine in the tank flows out at the rate of 4 gal/s. how much salt will the tank contain when it is full of brine? it's the question about elementary differential equation. provide specific solution and explanation with clear handwriting.

Need on this geometry question. explain how you did it.

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?