Try this site.
http://www.mathsisfun.com/fractions_multiplication.html
I work 8 hours and 45 minutes 6 days in a row. How much time is this comined
45 minutes is 3/4 of an hour
(8+3/4)*6 hours
8*6=48hours
3/4*6=9/2 hours = 4 and a half hours = 4hours and 30 minutes
total = 48+4 hours and 30 minutes
$$\sqrt{28}=\sqrt{4}*\sqrt{7} = 2\sqrt{7}$$
the 4 is not included because the circle is hollow so there is not 'equal to' part.
x can be 5 or 6 or anything bigger than 4 so
x>4
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forever
you usually cannot do this. At least not without doing some work first.
volume = 4500
use pi = 3.14
find r
$$\\Volume=\frac{4}{3}\pi r^3\\\\ 4500=\frac{4}{3}*3.14* r^3\\\\ 4500\times \frac{3}{4}=\frac{4}{3}*\frac{3}{4}*3.14* r^3\\\\ 4500\times \frac{3}{4}= 3.14* r^3\\\\ 4500\times \frac{3}{4}\div3.14= 3.14* r^3 \div 3.14\\\\ 4500\times \frac{3}{4}\div3.14= r^3 \\\\ r^3=4500\times \frac{3}{4}\div3.14 \\\\ r=(4500\times \frac{3}{4}\div3.14)^{1/3} \\\\$$
You can finish this on the site calc on the home page :)
Multiply both sides by 5/3
$$\sqrt[3]{2}\qquad $cannot be simplified$$$
It can however be approximated 2^(1/3)
$${{\mathtt{2}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right)} = {\mathtt{1.259\: \!921\: \!049\: \!894\: \!873\: \!2}}$$
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