Answer:
x + 2x + (x - 45)
Step-by-step explanation:
seamus is x
aime is twice seamus so multiply x by 2
shane did it 45 less than seamus so subtract by 45
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
It's important to note that when two angles create a straight line, they are supplementary.
This means their angle measures add up to 180° since a 180° angle is a straight line.
Since we know the measures of both angles in equation form, we can add them together and have them equal 180 to solve for x.

Combine like terms:

Subtract 27 from both sides:

Divide both sides by 9:

So x = 17.
Hope this helped!
 
        
                    
             
        
        
        
Answer:
f(x) = 
g(x) = 1
Step-by-step explanation:
y = (2x + 1)^1/2



y = x - 1
y + 1 = x
 
        
             
        
        
        
Answer:
a) 412 have a brother or sister in the school
b) 242 are girls
c) 339 are 13 years old or under
Step-by-step explanation:
Part a:
515 x 80%
412
Part b: 
515 x 47% 
242
Part c: 
515 x 66%
339
 
        
             
        
        
        
(x + 3) ( x + 1 ) 
because 3 x 1 = 3 and 3 + 1 = 4 , which gives you 4x.