The ruby throated hummingbird has a wing beat of 200 beats per second about how many wing beats would the hummingbird have in three minutes

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.