Question
Identify the following as rational or irrational numbers. Give the decimal representation of rational numbers: $-\sqrt{64}$
✓
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 $-8.0.$
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
$ABCD$ and $AEFG$ are two parallelograms. If $\angle\text{C}=55^\circ,$ determine $\angle\text{F}.$ 
→One angle of a quadrilateral is of $108^{\circ}$ and the remaining three angles are equal. Find each of the three equal angles.
→In a diagnostic test in mathematics given to students, the following marks $($out of $100)$ are recorded: $46, 52, 48, 11, 41, 62, 54, 53, 96, 40, 98, 44$ Which $'$average$’$ will be a good representative of the above data and why?
→Express the following equation in the form $ax + by + c = 0$ and indicate the values of $a, b, c$ in case. $3x + 5y = 7.5$
→Find the mean of first five multiples of $3$
→Factorise:
$4(a+b)-6(a+b)^2$
→$4(a+b)-6(a+b)^2$
Check the following are solutions of the equation $2x - y = 6$ and which are not: $(0, 6)$
→Factorise: $2\sqrt{3}\text{x}^2+\text{x}-5\sqrt{3}$
→By Remainder Theorem find the remainder, when $p(x)$ is divided by $g(x)$, where: $p(x)=x^3-2 x^2-4 x-1, g(x)=x+1$
→ Find the following products:
$\Big(\frac{\text{x}}{2}+2\text{y}\Big)\Big(\frac{\text{x}^2}{4}-\text{xy}+4\text{y}^2\Big)$
→$\Big(\frac{\text{x}}{2}+2\text{y}\Big)\Big(\frac{\text{x}^2}{4}-\text{xy}+4\text{y}^2\Big)$