Answer:
Step-by-step explanation:
use the distributive propriety to get 4c -12 = 8
divide both sides by 4 to get c-3 =2
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Given


The given system is  can be represented by
 can be represented by 

The given system is consistent when determinant of A is not equal to zero 



i.e. system is consistent for all value of k except 

                  
 
        
                    
             
        
        
        
1) It’s true because -5 is way smaller than 3. All the negatives are below the 0 and everything below the 0 is lower than everything above the 0.
2) false. it’s false because in order -5 isn’t even close to 3
3) false.. It’s false because when you have those 2 line that are covering the -5 that means it’s “transforming” into a positive number. So therefore it’s would be 5>3 that would make it true. 
4) True. it’s true because like I said the to lines mean the absolute value of something. So it’s being switch to a positive number 
Hope this helps :)
        
                    
             
        
        
        
Here are some simple equations that can be a life saver with this stuff :
vol of a sphere =

Circumference = 

sorry this might not be very helpful. I haven't don't this since last year. You basically have to work backwards. so plug in 972 for V and then do (3/4)×3.14.
then take the answer u got for ^^ and divide it by 2? not sure.