<span>The answer to your question would be </span><span>216.9112</span>.
        
                    
             
        
        
        
Answer:
390
Step-by-step explanation:
The formula of sum of arithmetic sequence is 
The number of this series are 2, 4, 6, 8, 10, 12, .  .  .  .  , 60.
The first term ( a ) = 2
The 30th even number is 60
The Tn is the term of the sequence 
So the equation is 
30/2 x ( 2 +  )
)
 = 60
 = 60
30/2 x ( 2 + 60 )
30/2 x (62)
1860/2
390
 
        
                    
             
        
        
        
Answer:
81.5 = 82 if ur problem said round it out 82 if not put 81.5
Step-by-step explanation:
 
        
             
        
        
        
4p^2 + 4p - 5
As the expression cannot be factored in it's current form, we need to check if splitting the middle term is possible.
<em><u>List factors of -20.</u></em>
-5 * 4
5 * -4
-10 * 2
10 * -2
-20 * 1
20 * -1
<u>None of the factors added together result in positive 4.</u>
Because splitting the middle term is not possible, and we cannot simplify this expression any further:
This expression cannot be fully factored.
 
        
             
        
        
        
Last option is the correct answer.
Step-by-step explanation:
Given that
Let x stand for the solution a and y stand for the solution B
So,
According to statement that
30 gallons have to be made

Solution A contains 29 percent bromine => 0.29x
Solution B contains 53 percent  =>0.53y
And the mixture of 30 gallons contains 45% bromine

Following equations will be used for solving the problem

Hence,
Last option is the correct answer.
Keywords: Equations, Variables
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