There are 4 lunch choices in a school cafeteria: salad, pizza, spaghetti, and sub sandwiches. the percentage of students that chose salad is 15%. if 45 students chose salad, what is the total number of students that ate lunch

Evaluate cos2θ for cosθ = square root of 3/2

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?