Answer:
x=75
Step-by-step explanation:
Hey There!
If you didn't know the exterior angle of a triangle is equal to the sum of the opposite interior angles of a triangle 
So essentially what I'm saying is that 
2x-5=70+x
step 1 add 5 to each side 
-5+5 cancels out 
70+5=75
now we have 
2x=70+x
step 2 subtract x from each side
x-x cancels out 
2x-x=x
we're left with 
x=75
 
        
             
        
        
        
Answer: The float committee made a scale model of their float before they started construction. The float committee used the scale 1 inch : 3 Feet to create their model. The actual float will be 18 feet long. 
So this being said.
Step-by-step explanation:
Your answer should be 6 inches. I hope this helps! 
 
        
                    
             
        
        
        
This is a proportion problem. Start by doing:
2/3 = x/52.20 
Multiply both sides by 52.20
X= 34.8 this is how much the son paid
Now add 34.8 + 52.20 
Answer is 87
 
        
             
        
        
        
<u>Part A</u>
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<u>Part B</u>
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<u>Part C</u>
No, because although they provide examples for specific polynomials being closed under addition and subtraction, there is a loss of generality.