Approximately what percentage of scores falls below the mean in a standard normal distribution

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Hundred and tens tables to make 430 in five different ways