Answer: 
$190.65 for 31 hours
Step-by-step explanation:
P= ha
123=20a
123/20=a
6.15=a
P=6.15h
P= 6.15(31)
p=190.65
 
        
             
        
        
        
12, 13, 15, 20, 24, 25, 26, 31, 33, 34
First, let's just find everything (minimum, maximum, Q₁, median {Q₂}, Q₃)
Minimum : 12, because it is the lowest number.
Maximum : 34, because it is the highest number.
Median (Q₂) : 24.5, because it is the middle number.
Q₁ : 15, because it is between 24.5 and 34
Q₃ : 31
So, 
1)  d-12
2)  c - 34
3)  b-15
4)  f-24.5
5)  a-31
~Hope I helped!~
        
             
        
        
        
Answer:
3/12 =1/6
Step-by-step explanation:
4+5+3=12
probability of picking 3 marbles is
3/12which in lowest term is 1/6
 
        
             
        
        
        
Find how many weeks are in a year and times by 5.15
        
                    
             
        
        
        
-5x = x + 6(1-x)
-5x = x + 6(1) + 6(-x)
-5x = x + 6 -6x
-5x = x - 6x + 6
-5x = -5x + 6
-5x + 5x = 6
0 = 6  Not equal. No solution.
(2x-5)² = (2x-1)(2x+1) -10(2x-1)
(2x-5)(2x-5) = (2x-1)(2x+1) - 20x + 10
2x(2x-5)-5(2x-5) = 2x(2x+1)-1(2x+1) - 20x + 10
4x² - 10x -10x + 25 = 4x² + 2x - 2x -1 - 20x + 10
4x² - 20x + 25 = 4x² - 20x - 1 + 10
4x² - 20x + 25 = 4x² - 20x - 9
Not equal. No solution.