Question
Identify the following as rational or irrational numbers. Give the decimal representation of rational numbers:
$-\sqrt{64}$
$-\sqrt{64}$
✓
Answer
We have,
$-\sqrt{64}$
$=-8$
$=-\Big(\frac{8}{1}\Big)$
$=-\Big(\frac{8}{1}\Big)$ can be expressed in the form of $\frac{\text{a}}{\text{b}},$
so $-\sqrt{64}$ is a rational number.
Its decimal representation is -8.0.
$-\sqrt{64}$
$=-8$
$=-\Big(\frac{8}{1}\Big)$
$=-\Big(\frac{8}{1}\Big)$ can be expressed in the form of $\frac{\text{a}}{\text{b}},$
so $-\sqrt{64}$ is a rational number.
Its decimal representation is -8.0.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Check the following are the solution of the equation 5x - 4y = 20.
(0, 5)
(0, 5)
Write in decimal form and say what kind of decimal expansion: $\frac{329}{400}$
→Verify $x = - \frac{1}{3}$ are zeroes of the polynomial $p\left( x \right) = 3x + 1$
→Factorise : $49a^2 + 70ab + 25b^2$
→PQRS is a square such that PR and SQ intersect at O. State the measure of $\angle\text{POQ.}$
→Factorise the following: $\Big(2\text{x}+\frac{1}{3}\Big)^2-\Big(\text{x}-\frac{1}{2}\Big)^2$
→If $10^x = 64,$ find the value of $10^{\big(\frac{\text{x}}{2}+1\big)}.$
→Factorize the following expressions:
$\frac{\text{x}^3}{216}=8\text{y}^3$
→$\frac{\text{x}^3}{216}=8\text{y}^3$
If x = 3 and y = 4 is a solution of the equation 5x - 3y = k, find the value of k.
