Answer:
28 in.
Step-by-step explanation:
All you have to do is all the length of all the sides: 6+6+8+8=28 in.
The answer is A) 1,73<2,1
No not always, because x could be a smaller number than y which would make it an negative. If x is bigger than y most likely it will be, but not always.
Answer:
The equation has a maximum value with a y-coordinate of -21.
Step-by-step explanation:
Given

Required
The true statement about the extreme value
First, write out the leading coefficient

means that the function would be a downward parabola;
Downward parabola always have their vertex on top of the parabola and as such, the function has a maximum value.
The maximum value is:

Where:

So, we have:



Substitute
in 


<em>Hence, the maximum is -21.</em>