Answer:
B. f(x) ≤ 0 over the interval [0, 2]. D.f(x) > 0 over the interval (–2, 0). E.f(x) ≥ 0 over the interval [2, ).
Step-by-step explanation:
Those are the 3 answers. Just did it on edge.
 
        
             
        
        
        
Mean = sum of values / number of values
74 = x/32
2368 = x
70 = y/19
 1330 = y
mean for female students = (2368 - 1330)/(32-19) = 79.85
        
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
after 1 Min it's -9
after 2 mins it's -1.08
Step-by-step explanation:
12% X 75 = 9
12% X 9 = 1.08
 
        
                    
             
        
        
        
<span>Simplifying
2(10 + -13x) = -34x + 60
(10 * 2 + -13x * 2) = -34x + 60
(20 + -26x) = -34x + 60
 Reorder the terms:
20 + -26x = 60 + -34x
 Solving
20 + -26x = 60 + -34x
 Solving for variable 'x'.
 Move all terms containing x to the left, all other terms to the right.
 Add '34x' to each side of the equation.
20 + -26x + 34x = 60 + -34x + 34x
 Combine like terms: -26x + 34x = 8x
20 + 8x = 60 + -34x + 34x
 Combine like terms: -34x + 34x = 0
20 + 8x = 60 + 0
20 + 8x = 60
Add '-20' to each side of the equation.
20 + -20 + 8x = 60 + -20
 Combine like terms: 20 + -20 = 0
0 + 8x = 60 + -20
8x = 60 + -20
 Combine like terms: 60 + -20 = 40
8x = 40
 Divide each side by '8'.
x = 5
 Simplifying
x = 5</span>