Answer:
A) None
Step-by-step explanation:
1) 
shoudnt neccesarily be a factor of nst, for example, if s = 3, t = 4, and n = 12, then both s and t are factors of n, but 
is not a factor of nst = 144.
2) 
shoudnt neccesarily be a factor of nst. Let s be 4, let t be 6, and let n be 12. Then n is a factor of both s and t, but 
is not a factor of nst = 12*24. In fact, it is a greater number.
3) Again, s+t isnt necessarily a factor of nst, let s be 2 and t be 3. Then both s and t are factor of n = 12. However 5 = s+t is not a factor of nst = 72.
So, neither of the three options is guaranteed to be a factor of nst. In fact, for s = 4, t = 6, and n = 12, none of the three options are valid.
Answer:
Quadrangle
Step-by-step explanation:
<em>Rectangles</em> are <em>four-sided polygons</em>.
The general name for a four-sided polygon is quadrangle.
Other members of the quadrangle group are <em>squares</em> and <em>rhombuses.</em>
Given:
To find:
The recursive formula.
Solution:
We have,
It is in the form of explicate formula of a GP, .i.e., 
.
Here, 
and 
.
The recursive formula of a GP is
Using this the recursive formula for given problem is
Therefore, the required recursive formula is .
Divide the figure into two rectangles:
12*3 (top) + 6*6 (bottom) = 72 yd^2
