Atank contains 60 kg of salt and 2000 l of water. a solution of a concentration 0.015 kg of salt per liter enters a tank at the rate 7 l/min. the solution is mixed and drains from the tank at the same rate. let y be the number of kg of salt in the tank after t minutes. write the differential equation for this situation.

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

20 ! brainliest ! add and simplify your answer.