Classify each real number below as either rational or irrational. select the number to see an explanation of the number’s classification. 21 7 π √38 0.2 0.7 √100 9 5 −6

Hello!

21 is a whole number that can be written as a fraction, along with it being an integer and a whole number. Therefore, 21 is rational.

7 is a whole number that can be written as a fraction, along with it being an integer and a whole number. Therefore, 7 is rational.

continues on forever in no specified order, so therefore it cannot be written as a fraction and therefore  is irrational.

√38 is like pi; it goes on forever in no specified order. √38 is irrational.

0.2 is a terminating decimal that can be written as a fraction. Therefore 0.2 is a rational number.

0.7 is a terminating decimal that can be written as a fraction. Therefore 0.7 is a rational number.

√100=10, which is a whole number and integer, therefore √100 is a rational number.

9 and 5 are both whole numbers and integers that can be written as fractions. 9 and 5 are both rational numbers.

-6 is an integer and can be written as a fraction. -6 is a rational number.

I hope this helps!