Shoe sizes are normally distributed with a mean of 8 and standard deviation of 1.5. Fredrick has labeled the normal distribution curve and filled in the percentages between each standard deviation according to the Empirical Rule in the curve below. Which standard deviation did he label incorrectly?

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?

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !