Middle school math! I actually know how to teach differential calculus to middle schoolers, but I wouldn't start with this example, where we're gonna have to integrate eventually.
We have

We have an odd mix of s and t on the right, which means this probably was an implicit derivative to begin with. In other words, instead of s as a function of t, we have some equation of s and t that is satisfied.
We move the variables to their respective sides

Integrating,

We only need one constant of integration.
I won't bother to write the square root. This is choice D.
Answer:
1) 
2) 
see the explanation
Step-by-step explanation:
we know that
The perimeter of the square is equal to

where
s is the length side of the square
we have

substitute

solve for s

The area of a square is equal to

substitute

we have that

therefore
2 equations that can determine the perimeter of the square are
1)
----> 
2)
----> 
Answer:
Its either 72 or 162. Dont know which one it is so plx tell me im right with either one!.
Step-by-step explanation:
Answer: CD segment
Step-by-step explanation:
We have to identify the statement about the plane which is not true.
1. Consider the first statement,
" A plane can be thought of as flat". It is true as plane is a flat surface.
2. Consider the second statement,
"The surface of a plane is made up of points". It is true as plane is a flat surface which is made up of points.
3. Consider the third statement,
"A plane can be seen". It is not true as plane is a flat surface which can not be seen.
4. Consider the fourth statement,
"A plane extends infinitely in all directions". It is true as plane is a flat surface that extends infinitely along its edges.