How can I solve

15n 3u 4=9

Suppose you are going to make a sandwich. You have mayonnaise and mustard to spread on the bread. You have white, wheat, and rye bread. You have ham, turkey, and pastrami.

In the proportion 5/6 equal to 10/12 means are

An aquarium with a square base has no top. There is a metal frame. Glass costs 10 dollars/m^2 and the frame costs 9 dollars/m. The volume is to be 20 m^3. Express the total cost C in terms of the height h in meters.

Triangle ABC has the given measures. Solve the triangle (s), if any exist. A = 162°, a = 6.1, b = 4 How many triangle (s) can possibly be formed?

Mala ran 30 laps in week one and will increase the number of laps she runs by 2 each week. Coby runs 16 laps in week one and will increase the number of laps he runs by 5 each week.

The sun shines at a 60° angle to the ground. How long is the shadow cast by a 20 ft tall flagpole?

How do you do this 9x-3=5x-15?

What is the approximate circumference of the circle? what is the height of the parallelogram? what would be the approximate length of the parallelogram if the base were completely straight?

James used a recipe in which 4 tablespoons of vinegar were mixed with 5 tablespoons of olive oil. Which statement about the amount of vinegar mixed with olive oil is true?

If you have a bag of marbles with eight of them blue 4 are yellow and six green. If you want to make the probability of selecting yellow marble 30%, how many would you add to the bag?