You would divide both sides by 0.75, to get a=-12.
I think this is a one- step equation, but that is the only way I think you can solve it.
The answer is: 8.533333 repeating or the fraction 128/5
If you divide 128/5, you will get that answer.
Step-by-step explanation:
let us consider the elevation of the sun is x
then
x=6×6
x=36
Check the picture below.
now, keep in mind that ship B is going at 20kph, thus from noon to 4pm, is 4 hours, so it has travelled by then 20 * 4 or 80 kilometers, thus b = 80.
whilst the ship B is moving north, the distance "a" is not really changing, and thus is a constant, that matters because the derivative of a constant is 0.