Answer with explanation:
The given vectors in are reduced to their componednt form as shown
For vector A it can be written as

Similarly vector B can be written as

Hence The sum and difference is calculated as

The direction is given by
with positive x axis.
Similarly

The direction is given by
with positive x axis.
Gravity is the cause of . . .
-- star formation,
-- planet formation,
-- orbits.
So without gravity, there pretty much wouldn't be any solar or any system.
Answer is d)
...................
So 10 gallons of gas would let you travel 300 Miles.
x gallons = 50 Miles
10 : 300 :: x : 50
x = 500/300
x = 1.66667 gallons.
So, the car would run 10 - 1.6666 gallons = 8.33 gallons.
After that, the warning light turns ON!
Hope this helps!!