A science teacher has a solution of 20% saline and another of 50% saline how much of each solution must he mix to get 60 ml of 28% saline solution?

What is 1.665 as a fraction

Sylvie bakes 4 trays of muffins. Each tray contains 8 muffins. She gives away 12 muffins to friends. Let m represent the number of muffins Sylvie has left.

What is 625 written as a single power number of 5

What is the product? (-3s+2t) (4s-t) A. - 12s^2-2t^2 B. - 12s^2+2t^2 C. - 12s^2+8st-2t^2 D. - 12s^2+11st-2t^2

What is the percent decrease on a dvd recorder that is marked down from $400 to $350

May can swim one lap in 6.089 seconds, and Sarah can swim one lap in 6.098 seconds. Write an equation to compare their speeds.

How do I solve systems of equations using elimination?

Which of the following is a polynomial with roots 2, 3i, and - 3i? A. f (x) = x^3 - 2x^2 + 6x - 9 B. f (x) = x^3 - 6x ^2 + 9x - 18 C. f (x) = x^3 - 6x^2 + 18x - 2 D. f (x) = x^3 + 2x^2 + 9x - 18

The surface area "S" of a cube with side length e is S = 6e^2. Find the side length of a cube with a surface area of 150 cm.

A farmer hears a weather report saying that temperatures will be decreasing approximately 6∘ 6∘ every hour for the next 5 hours. What signed number represents the total change in temperature expected over the next 5 hours