Answer:

Step-by-step explanation:
Let

Differentiating y with respect to x

where a and b are constants
The area is one side times the other side
Make the other side x.
12x=42
x=42/12=3.5
The perimeter is 2x+2y where x and y are sides of the rectangle.
P= 2(3.5)+2(12)=7+24=31 inches
Hope this helps.
Hopes this helps: i used a visual as well
1.5+(-8.3)
=1.5-8.3
-6.8
The answer is -6.8
Answer:
12,132
Step-by-step explanation:
It says a restaurant chain bakes 6,777 more key lime pies that cocunut cream pies. This means regardless of the amount of cream pies, the restaurant chain bakes 6,777 more.
So....
5,355+6,777 = 12,132