Combine like terms

10a+7b-13a-4b

What is x in this equation 2-3/4x=11

Every 5 years in march the population of a certain town is recorded in 1995 the town had a population of 4,500 people.

A trapezoid has a 60-degree angle and a 45-degree angle. What are the other angles?

If 1 gallon of paint covers of a wall, then how much paint is needed to cover the entire wall?

Describe in words a situation that can be represented by 7:2

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.