$$\left({\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right){\mathtt{\,\times\,}}{\mathtt{7}} = {\mathtt{70}}$$
just put them in
inverse tan is the same as arc tan so use
atan
$$\\if\;log_{10}x=3\;\;then\\\\ x=10^3 = 1000$$
87 - - 5 = 87+5 = 92 degrees
Just do it yourself - you do not need a calc.
You can add up the fraction bits with the web2 calc if you want/need to.
How can there be any solutions? There is no equal sign :/
$${\mathtt{0.65}} = {\frac{{\mathtt{13}}}{{\mathtt{20}}}}$$
I just entered 0.65 into the calc :)
Is that cross meant to be a times sign or the letter x?
Here we use * as a times sign - it cuts down confusion :)
If it is an x then is it x*4 or x^4?
A rectagular prism has a length a breadth and a height.
It has 6 sides in total.
Work out the area of each side and then add them all together to get the surface area :)
$${{\mathtt{20}}}^{{\mathtt{14}}} = {\mathtt{1\,638\,400\,000\,000\,000\,000}}$$
$$\\98*0.05^{14}=\frac{98}{20^{14}}=\frac{98}{1 638 400 000 000 0000 000}$$
+118724 
