The given function is

with
t = time, hours
f = temperature, °C
Because the maximum and minimum values for the Sine function are +1 and -1 respectively,
The maximum value of f = 33 - 20 = 13.
The minimum value of f = -33 - 20 = -53.
The period, T, is given by

Answer:
Maximum: 13°; Minimum: -53°; period: 4 hours
You did the top right but the denominator is 0 so the slope in undefined or 0.
Hope this helps!
The maximum area of the pen is the highest area the pen can have
The maximum area is 16200 square yards
Let the dimension be x and y.
So, the perimeter is given as:

Because it has one additional fence, the perimeter is calculated as:

Make y the subject

The area is calculated as:

Substitute 

Expand

Differentiate

Set to 0

Rewrite as:

Divide both sides by 4

Substitute 90 for x in 


Hence, the maximum area is 16200 square yards
Read more about maximum areas at:
brainly.com/question/11906003
Answer:
by calculating the numbers of hhcf
Answer:
x = 1
Step-by-step explanation:
7x - 3 = 4x
-3 = 4x - 7x
-3 = -3x
x = 1