Answer:
   Project A: $55,000 Project B: $50,800 Contractor should choose project A
Step-by-step explanation:
The expected value of the project is the sum of products of profit and its probability:
In thousands, ...
   A:  (50×0.6) +(80×0.3) +(10×0.1) = 30 +24 +1 = 55 . . . thousand
   B:  (100×0.1) +(64×0.7) +(-20×0.2) = 10 +44.8 -4 = 50.8 . . . thousand
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The contractor should choose Project A based on the expected value of profit.
 
        
             
        
        
        
(H o h)? 
Although if x=10 then 6-10=-4.
        
                    
             
        
        
        
Answer:
<h2>
 14.7 %</h2>
Step-by-step explanation:
 let us total the amount in her portfolio
Company A was worth $2690 
Company B was worth $2980. 
Total = $5670
 
when The stock in Company A decreases by 20%  she will have 
$2690 *0.8=  $2152
Company A will worth $2152
when The stock in Company B decreases by 10%  she will have 
$2980 *0.9=  $2682
Company A will worth  $2682
In all after the decline in are portfolio is $2152+$2682= $4834
the difference for the original amount in her investment is =  $5670-$4834
= $836
The total percentage decrease in the investor's stock account
= (836/5670)*100= 0.147*100= 14.7 %
 
        
             
        
        
        
Answer: 6x+5y=28
Step-by-step explanation:
Looking at the first equation, we can tell that x stands for notebooks and y stand for pens. Since this talks about the total cost with the amount of products they bought, we can automatically eliminate the subtracting answer choices. 
Now, we know that 6x+57=28 is the correct answer because Sonja bought 6 notebooks and 5 pens. This becomes 6x+5y.
 
        
             
        
        
        
Answer:
<h2>
<em><u>$23.40 </u></em></h2>
Step-by-step explanation:
<em><u>Given,</u></em>
Cost price of 8 cakes = $62.40
<em><u>So,</u></em>
Cost price of 1 cake = $ 
<em><u>Therefore,</u></em>
Cost price of 3 cakes
= $( × 3)
 × 3)
- <em>[On dividing 62.40 by 8]</em>
= $(7.80 × 3)
- <em>[On multiplying]</em>
= $23.40
<em><u>Hence,</u></em>
<em><u>The required cost of 3 cakes is $23.40 (Ans)</u></em>