Answer:
   16
Step-by-step explanation:
Put the numbers where the variables are and evaluate:
   F(3) = 2(3)^2 +1 = 19
   G(4) = 2(4) -1 = 7
   H(5) = 5
Then the desired sum is ...
   F(3) +G(4) -2H(5) = 19 +7 -2(5) = 16
 
        
             
        
        
        
Answer:
If you see 5 18 b on there than first you need to convert A to B to C, but if it is still not congruent than, keep checking. Also the answer should be 8x 5 im sorry if it's wrong just got up i got it right on my test
 
        
             
        
        
        
Answer:
5 feet of wall should be on each side of the painting.
Step-by-step explanation:
Given that a 3 foot wide painting should be centered on 13 foot wide wall, to determine how many feet should be on each side of the painting, the following calculations must be performed:
(13 - 3) / 2 = X
10/2 = X
5 = X
Therefore, 5 feet of wall should be on each side of the painting.
 
        
             
        
        
        
Answer:
15 divided by 2 1/2
Step-by-step explanation:
$6 per yard. 
 
        
             
        
        
        
Answer:
<em>2x - 1</em>
Step-by-step explanation:
<u>Equivalent Algebraic Expressions
</u>
One algebraic expression can be written in several ways by applying known rules and theorems that modify expressions without changing its final value.
The expression:
1 + 2(x - 1)
Can be modified by applying the following operations:
Multiplying the constant by the contents in parentheses:
1 + 2x - 2
Collecting like terms:
-1 + 2x
Or, equivalently:
2x - 1