Answer:
-75
Step-by-step explanation:
3(-30)=-90
-90+15 is -75
 
        
                    
             
        
        
        
The distance around a figure is called the perimeter. 
Hope this helps :) 
 
        
                    
             
        
        
        
Answer:
 128 ft/s; it represents the average speed of the object between 2 seconds and 6 seconds
Step-by-step explanation:
The average rate of change is another way to say slope.
slope = (y2-y1)/(x2-x1)
       = (576-64)/(6-2)
       = (512/4)
      =128 ft/s
This represents the change in ft per second, or the  average speed the object is going during the time period.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
here you go mate
step 1
x + 7 < 9  equation
step 2
x + 7 < 9  subtract -7
x+7(-7)<9(-7)
answer
x<2
 
        
             
        
        
        
Answer:
7/2 =x
Step-by-step explanation:
The triangles are similar so we can write a ratio to solve
2         4
---- = -------
x        7
Using cross products
2*7 = 4x
14 = 4x
14/4 = 4x/4
7/2 =x