Write a real-world problem that can be solved by adding 1.39 and 2.45 using decimal models. Then solve.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Which table shows a proportional relationship between miles traveled and gas used?