Set up and solve an equation:
3(90-x) = (180-x).  Then  270 - 3x = 180 - x, or   270 - 180 = 2x.
                                                                               90 = 2x, so x = 45 deg.
Is this true?     3(90-45) = (180-45)?  If so, x = 45 degrees is correct.
        
             
        
        
        
Answer:
Elon Musk
CEO of Tesla Motors
Elon Reeve Musk FRS is a business magnate, industrial designer, and engineer. He is the founder, CEO, CTO, and chief designer of SpaceX; early stage investor, CEO, 
 
        
             
        
        
        
Answer:
 -- Proved
 -- Proved

Step-by-step explanation:
Given


Required
Show that 
The volume is calculated as:

Open the brackets



Collect Like Terms


Divide through by 4


Solving further:
Expand the expression

Factorize:


Split:


 
        
             
        
        
        
Answer:
yes i think that is definitely enough intonation
 
        
             
        
        
        
Answer:
A=12 in
perimeter=36 in
Step-by-step explanation: give me brainly