The movie should be 2 hours and 15 minutes long.
Step-by-step explanation:
You have 120 bottles of Cola and 120 bottles of Sprite.
You can exchange 3 empty Cola bottles for a new bottle of Sprite.
You can exchange 4 empty Sprite bottles for a new bottle of Cola.
You can borrow empty bottles, but must return them in the end.
What is the maximal number of bottles of drink that you can drink? Prove the optimality of your result.
As this is a puzzle, please give short and clever answers rather than tedious bruteforce calculations.
Answer:
Step-by-step explanation:
Dividing both sides by -7.
There is only one solution that satisfies the equation.
F(x)= (x+1)^2
f(-2)= ((-2)+1)^2
= (-1)^2
= 1
Divide the arrow into upper triangle and lower rectangle
area of triangle :-
area of rectangle :-
add both the area :-
area of triangle+ area of rectangle = area of arrow
310 + 300 = 610 cm²
