A manufacturer knows that their items have a normally distributed lifespan, with a mean of 6.9 years, and standard deviation of 1.2 years.

Eileen purchased 3.4 pounds of apples at the total cost of $19.72. if she purchases 6.2 pounds of apples at this store, how much would it cost?

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class