What is the simplified expression for - 2a2b + a2 - 5ab + 3ab2 - b2 + 2 (a2b + 2ab) ?

The definition of the word acute angle as a biconditional statement

Which information is not necessary to solve this problem? Peter bought 7 pizzas for his party. Each pizza can feed 6 people. There were 40 guests invited to his party. How many people could Peter feed with the pizzas? A. Peter bought 7 pizzas. B.

If a ≠ b and 1x + 1a = 1b, then x =

Employment data at a large company reveal that 55 % of the workers are married, that 20 % are college graduates, and that 1/5 of the college graduates are married.

Nicole has a machine that will produce a number from one through 50 when she pushes a button if she pushes the button, what is ... A. P (multiple of 10) ? B. P (not 100) ? C. P (not a multiple of four) ? D. P (one-digit number) ?

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.