LCM of 5x^2y and 21xy^3

A sector with a central angle measure of 200° has a radius of 9 cm. What is the area of the sector? 1.) 81pi cm2 2.) 45pi cm2 3.) 18pi cm2 4.) 10pi cm2

2x-3y=-2 y=-4x+2 can someone use substitution method for this question

What is 0.044 as a fraction in simplest form?

Alex has x dollars per week available for lunch. She spends $3 on lunch every weekday. Write an algebraic expression to represent how much money she has left over at the end of the week.

How do you do volume and surface area for a cube?

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.