What is 309,099,990 in expanded form

What is the result of adding the system of equations? 2x+y=4 3x-y=6

What is 1/3x5 on anuber line what does it look like on a number line

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?