Alan

It could be anything depending on the slope of the line!  (I'm assuming you have a straight line in mind).

If tan(a/2) = 1/√3 then sin(a/2) = 1/2 and cos(a/2) = (√3)/2

sin(a) = 2*sin(a/2)*cos(a/2) = 2*1/2*(√3)/2 = (√3)/2

-10 - (-2) + (-9) = -10 + 2 - 9 = -17

time = distance/speed

9.5 meters/1.5 meters/second = (9.5/1.5) seconds.  You can do the division with the calculator on the home page here.

Raising to a power takes precedence over negation so if you just do, for example -2² you should get -4.

However, if you do (-2)² then you get +4, because the minus is squared as well.

If you want the positive result make sure you put the negative sign inside the brackets before squaring. 

216 = 6³ = 6*(6)²

18 = 2*9 = 2*3²

Therefore √(216)/√(18) = 6*√6/(3*√2) = 2√6/√2 = 2√3

$$\frac{919}{5}=183\frac{4}{5}$$

If we assume the density of asphalt is about 2000kg/m³, and 1 ton = 907kg then

volume = 907/2000 m³

For a thickness of 166mm (=0.166m) the area covered is

$${\mathtt{area}} = {\frac{{\mathtt{907}}}{\left({\mathtt{2\,000}}{\mathtt{\,\times\,}}{\mathtt{0.166}}\right)}} \Rightarrow {\mathtt{area}} = {\mathtt{2.731\: \!927\: \!710\: \!843\: \!373\: \!5}}$$

or area ≈ 2.7 m²