No, it's not a function because 2*6=12, but 6*4=24. In order for it to be an actual proportion, it would have to have the same number multiplied to it. Hope this helps!
Answer:
2l + 2w. l+l+w+w. l+l+2w. 2(l+w)
-- Half of 12 is 6 .
-- If you mean ' XI ' to be Roman numerals, then it stands for 11 .
Half of 11 is 5-1/2 .
Writing Romanly, that would be ' V S ' .
Answer:
4.5 hours
Step-by-step explanation:
To answer this, we shall be using a diagrammatic representation.
Now, let the time taken for them to be 54 miles apart be x hours
Mathematically, distance = speed * time
For the north bound boat, it would be 4 * x miles away = 4x miles away from the starting point
For the south bound boat, it would have travelled a distance of 8 * x = 8x miles
Now the distance between both is 54 miles ; this means that by adding the distance traveled by both, we shall have a total length of 54 ;
Thus mathematically;
4x + 8x = 54
12x = 54
x = 54/12 = 4.5 hours