900/45 = 20
so ratio of middle school students and teachers: 900:45 = 20:1
if high school student-teacher ratio as middle school then
x/110 = 20/1
so x = 110 * 20 = 2200
answer is C) 2200
 
        
                    
             
        
        
        
<h2>
The value of x is  always grater than 4.</h2><h3>
Therefore x = (4,∞)</h3>
Step-by-step explanation:
Given 
5x+ 2 >3x+10
⇔5x - 3x >10-2
⇔2x > 8
⇔x > 4
<h3>
The value of x is  always grater than 4.</h3><h3>
Therefore x = (4,∞)</h3>
 
        
        
        
3x+2 mulitiply by 2. you will get 6x+4 now put 10x-12 like so 6x+4=10x-12. then use like terms and subtract 6x from 10x. you will get 4x-12=4. then add 12 to cancel out then divide 16 by 4 and then x=4 then plug in 4 to replace x in 3x+2.
The answer is 14
        
                    
             
        
        
        
Answer:
151°
Step-by-step explanation:
126°+221°+95°+57°+70+x=720° ( sum of interior angles of hexagon) 
x + 569° =720°
x = 720°- 569°
 =151°