In a cafeteria 3/10 of the students are eating salads, and 3/5 are eating sandwiches. There are 20 students in the cafeteria. How many students are eating lunches other than salads or sandwiches?

If a foundation is 60' by 20' what is the perimeter of the foundation in feet?

If line segment is 100 feet, and line segment is 80 feet, what is the length of line segment?

Suppose y varies directly with x. If x is - 7 when y is 3, what is x when y is - 5?

The lowest altitude of an altocumulus cloud is about 3838 feet. The highest altitude of an altocumulus cloud is about 3 times the lowest altitude. What is the highest altitude of an altocumulus cloud? Write your answer as a power.

How do you solve 2x+3y=3

3X 9=? Tens digit: 3 - 1 = Sum of digits: + = 9 3x9=

Simplify. x (7 14x) 21x 15x 7 21x 1 22x

A right triangle has a hypotenuse that is 15 inches long and one leg that 9 inches long what is the perimeter of the triangle

If m^2 + 8 = 39, then m^2-7=?

Andrea is painting a ceramic plate with a diameter of 12 inches. She wants to paint a thin blue line around the edge of the plate. How long will the line be?