Answer:
See below.
Explanation:
A rational number can be written as a fraction a/b where a/b are integers. But irrational numbers cannot be written as a/b.
-3.786 is rational because it can be written as -3 786/1000.
8/17 is of the form a/b so it is rational
8.23, 10.8673124 and 0.75 are also rational for the same reason as -3.786 is rational.
√0.49 = 0.7 so it is rational.
3π is irrational as π is irrational . π is a non -repeating decimal which goes on without bounds.
√11 is also irrational - a non repeating decimal like π.