3 pounds bc there is 5 triangles for 15 pounds of squares
        
             
        
        
        
Answer:
63mm 
Step-by-step explanation:
7mm+8mm=15. 
 15×15=225
12×12=144(area equals base times height) add 225-144=81(here we are using the Pythagoras theory) so you search for the square root of 81 which is 9 meaning the height is 9. since we say area is 1/2base times height we should take 1/2 ×9×12=63.if the answer doesn't match with the answer in your book please tell me right away so that I can try another method thank you
 
        
             
        
        
        
Answer:

Step-by-step explanation:
The standard form of this equation is

m stands for the gradient or the slope, and c represents the y-intercept

 
        
             
        
        
        
Answer:
the answer is C
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
5x-4=-3-x
5x+x=4+(-3)
6x=1
x=1/6