Answer:
total rainfall during three months :-
Explanation :
here's the solution :-
=》rainfall in March =
=》rainfall in April =
=》rainfall in May =
Total rainfall during these three months :-
=》
=》
=》
=》
so, total rainfall during the three months is 1.41 inches
Answer:
$9.00
Step-by-step explanation:
4x + 12 = 48 - First, subtract 12 from each side of the equation.
4x = 36 - Then, divide each side by 4 to get x by itself.
x = 9 - After dividing by 4, we are left with x = 9, so 1 ticket costs
$9.00
Answer:
20%
Step-by-step explanation:
Whenever you face the problem that deals with maxima or minima you should keep in mind that minima/maxima of a function is always a point where it's derivative is equal to zero.
To solve your problem we first need to find an equation of net benefits. Net benefits are expressed as a difference between total benefits and total cost. We can denote this function with B(y).
B(y)=b-c
B(y)=100y-18y²
Now that we have a net benefits function we need find it's derivate with respect to y.
Now we must find at which point this function is equal to zero.
0=100-36y
36y=100
y=2.8
Now that we know at which point our function reaches maxima we just plug that number back into our equation for net benefits and we get our answer.
B(2.8)=100(2.8)-18(2.8)²=138.88≈139.
One thing that always helps is to have your function graphed. It will give you a good insight into how your function behaves and allow you to identify minima/maxima points.
