Question

Which is a rational number?
a.square root 9
b.square root 15
c.square root 28
d.square root 52

Answer 1

You can find the answer, if you calculate each one alone and see.
If the result has a indefinite amount of nubers after the comma, then it means t can be represented as a fraction, wich implies it belongs to the rational numbers.

Say for instance:
\[\sqrt{9}=3\]
"3" may belong to the rational numbers, but it is a ntural number as well, because it´s a whole number and can be viewed as 3,00 and so on.
So we can say that it is a rational number, since all the natural and whole numbers belong to the rational numbers.

Answer 2

"pi" for instance is called an "irrational" number, because it has no defined fraction structure:
\[\pi = 3.14159265358...\]

Answer 3

so it would be a

Answer 4

Yes, "a" is a correct answer, but check if there are more.

Answer 5

ok thnk u