Dan's mean average on 5 exams is 86 determine the sum of his score

In the rectangle below ac=30 units what is de

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups