Prove this trigonometric identity

sin 3x/sin x - cos 3x/cos x = 2

When six times a number is decreased by 9, the result is 3. What is the number?

John has a total of 24 cookies. Sixteen of these are chocolate chip, and the rest are sugar. What is the ratio of chocolate chip to sugar? A: 1:2 B: 2.1 C: 2.3 D: 3:2

A simple random sample of 100 bags of tortilla chips produced at Plant A is selected every hour for quality control. In the current sample, 18 bags had more chips (measured in weight) than the labeled quantity.

If 12+18=30 and A is the sum of the previous Then what is A+19?

Solumedrol 1.5 mg/kg is ordered for a child weighing 50 lb. Solumedrol is available as 75 mg / 1 mL is available. How many mL must the nurse administer?

How many $3.50 burgers can you buy with a million dollars [1 10

You and some of your friends go to Six Flags. There, tickets are only $2 per ride, however there is an admission fee of $5.

Cual es el producto de 45.37 y 26.8

Lily goes car shopping and finds two cars. The first one burns fossil fuel, gasoline, that sells for $18,000. It will cost $100 each month to buy fuel and maintain this car.

Use mental math to find the difference. 1254 - 320