Prove 2SinAsinB = cos (A-B) - cos (A+B)

A painter charges $15.33 per hour, plus an additional amount for the supplies. If he made $157.03 on a job where he worked 5 hours, how much did the supplies cost? A. $31.41 B. $76.65 C. $80.38 D. $90.38

Alonso paid for repairs on his car, and 3/5 of the bill was for labor costs. How much was the total bill if the cost of the labor was $79.50? Let b = the amount of the total bill. Which equation and solution is correct?

12e^5 divide by 3e^3

a set of 30 event tickets are placed in a bag. there are 6 baseball tickets, 4 hocked without looking. find each probabbility. ey tickets, 4 basketball tickets, 2 football tickets, 3 symphony tickets, 4 ballet tickets, and 5 theater tickets.

What is the value of y=2x-5 when x=7?

The blue line arrives every 10 minutes the red line arrives every 8 minutes and the yellow line arrives every 12 minutes, how long until they arrive at the station at the same time

A certain forest covers an area of 2500 km2. Suppose that each year this area decreases by 5.25%. What will the area be after 15 years? Use the calculator provided and round your answer to the nearest square kilometer.

Use the formula V = s³, where V is the volume and s is the edge length of the cube, to solve this problem. A cube-shaped container has an edge length of 23 feet. What is the volume of the container?

Dimitrus returned 5 library books last week, returned 3 books this week, and then checked out 8 more books. He now has 12 library books. How many books did he have before last week

Robin used 1/4 of a pound of butter to make a cake. Before she started, she had 7/8 of a pound of butter. How much butter did Robin have when she was done baking? Give your answer as a fraction of a pound.