Question

Please help I’m timed!!

Answer 1

Answer:

5/9, 2/7, 3/10 are all rational numbers

Step-by-step explanation:

Remember that all rational numbers are able to be written as a fraction or ratio of two integers.

Answer 2

Answer:

$\frac{2}{7}+\sqrt{121}$

Step-by-step explanation:

Since, a real number is called rational number if it can be expressed in the form of $\frac{p}{q}$,

Where, p and q are integers,

S.t. q ≠ 0,

If the number is not a rational number then it is irrational,

Now, the sum or difference of two rational numbers is a rational number,

While, the sum or difference of a rational number and an irrational number is an irrational number.

∵ √18, √11 and $\pi$ are irrational numbers,

Also, $\frac{5}{9}$, $\sqrt{16}$ and $\frac{3}{10}$ are rational number,

$\implies \frac{5}{9}+\sqrt{18},\pi+\sqrt{16}, \frac{3}{10}+\sqrt{11}\text{ are irrational numbers}$

Now,

$\frac{2}{7}\text{ and }\sqrt{121}\text{ are rational numbers}$

Hence,

$\frac{2}{7}+\sqrt{121}\text{ is rational number}$