In pablo's class there are 12 girls and the rest of the students are boys. exactly 1/3 of the students in the class are girls.

part a: how many boys are in the class?

part b: in pablo's class 1/2 of the girls wear glasses. how many of the girls wear glasses?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.