Find the value of bx9 when b=8

Identities to simplify each expression as much as possible cos38 degrees cos 83 degrees+sin 38 degrees sin 83 degrees=square root of 2/2

What is x at most 30

What is the product of - 2x^3 + x - 5 and x^3 - 3x - 4 Show your work

Consider the equation 6k+7=Ak-11. If k=3 in this equation, what is the value of A?

Which are choices are equivalent to the quotient below? 50/10

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.