Find the mode, mean, median, and range for each data set. Round to the mean to two decimals places where necessary

Which expression is rational? 6. , square root two, square root 14, square root 49

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.