You just put the scale of one building on one side and the scale of the similar building on other side, with width and length written in same place (denominator or numerator). With x for the part that you dont know
Length of one building / width of one building = length of other building / width of other building
12 / 9 = 100 / x
Solve for x, by cross-multiplying
12 * x = 100 * 9 
12x = 900
X = 900/12
X = 75 ft
        
             
        
        
        
1. 0 > 3x - 3 - 6
0 > 3x -9
9 > 3x
3 > x
It would be a closed circle starting from 3 going to the right.
2. 4x + 1 - 1 >/ -8
4x >/ -8
x >/ -2
It would be an open circle starting from -2 going to the right.
3. -1 </ 2n + 4 - 5
-1 </ 2n -1
0 </ 2n
Undefined.
4. -6 > 5n + 5 + 4
-6 > 5n + 9
-15 > 5n
-3 > n
It would be a closed circle going to the right
 
        
             
        
        
        
Answer:
y  =  -7/2 + 5x/2
t = 3k/v
f = 9c/5 +32
Step-by-step explanation:
 
        
             
        
        
        
x=9
Add 6 to both sides of the equation. x = 3 + 6
Add 3and 6.
x=9