Answer:
(a) 1/2
(b) 9/10
Step-by-step explanation:
Probability is given by number of possible outcomes ÷ number of total outcomes
(a) Number of possible outcomes = 5 questions, number of total outcomes = 10 questions
Probability (I answer all 5 problems correctly) = 5/10 = 1/2
(b) Probability (I answer at least 4 of the problems correctly) means I either answer 4 of the problems or all 5 problems correctly = 4/10 + 5/10 = 9/10
 
        
                    
             
        
        
        
<span>the line over the 28 means the 28 repeats forever.
1.282828.... and so on
 let x be the rational number 1.28...
we can use this trick:
100*1.282828....= 128.282828... 
(the decimal 28 part repeats)
100x = 128.28...
next:
100x - x = 128.282828... - 1.282828...
the .282828... part will be subtracted away
99x = 127
divide both sides by 99 to get
x= 127/99</span>
        
             
        
        
        
Answer:
Jillian has 720 shares
Step-by-step explanation:
Find 60% 1,200 shares
Convert 60% to decimal.
0.6
Multiply to find 60% of 1,200
0.6 x 1,200 = 720
720 shares
 
        
             
        
        
        
-12x^6 - 60x^5-75x^4.......GCF = 3x^4
 3x^4(-4x^2 - 20x - 25)
3x^4(-2x - 5)(2x + 5) <==
        
             
        
        
        
Answer:
Step-by-step explanation:
38192.4