Question

Which number is irrational? ( MCC.8NS.1) A. √10, B. -√81 c. 5/4 d. 9.12

Answer 1

Answer:

A. √10

Step-by-step explanation:

A rational number can be written as the ratio of two integers

A. √10

This cannot be simplified into the ratio of two integers,  Square roots that cannot be simplified are irrational  

B. -√81

- 9

-9/1  which is the ratio of two integers so it is rational

c. 5/4

This is the ratio of two integers so it is rational

d. 9.12

912/100

This is the ratio of two integers so it is rational