Can someone help me with this I really don't understand
2 answers:
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Answer:
8 ft.
Step-by-step explanation:
The formula for area of a square is:
We are given the area of 64 square feet.
Each side should be 8 ft.
Hope this helps.
Answer:
First exercise
a) 1/8=0.125
b) 5$
c) y = 0.125 * x - 5
Second exercise
a) 0.11 $/KWh
b) no flat fee
c) y = 0.11 * x
Step-by-step explanation:
(See the pictures)
Answer:
and
Step-by-step explanation:
To find the max points we need to take the derivative of the function and then find the critical values.
First we take the derivative:
Now we need to find when f'(x)=0 to find the critical values.
The critical values will be
for any integer n
between 0 and 2 pi, the critical values will be
We can determine if these are minimums or maximums by using the second derivative test.
So we need to take the second derivative;
We need to see if the second derivative is positive or negative to determine if it is a max or min.
Since the second derivative is negative at
and
we know both of those are the x-values of maximums.