What is the devote the (11, 10, 9, 12, 10)

0.4

0.6

1.8​

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

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

How many terms does the polynomial x^2 y^2 have