How would you write twenty-one thousand six hundred fifty-six in standard form? 27,656
21566
21,665
2165

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.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.