Answer:

Step-by-step explanation:
You factor out the common term first.
You should get the equation below.

then you get rid of the negative inside
 
and will be simplified to this.

 
        
             
        
        
        
positive = greater than 0.
Therefore we have the inequality:
       |add 7 to both sides

 
        
             
        
        
        
Step-by-step explanation:
The surface area volume = l×b
or, 14×10 cm = 140 ans
 
        
             
        
        
        
The probability of 1 number showing up out of 20 is 1/20
The probability of 3 different numbers showing up would be 3/20
Answer: 3/20
 
        
             
        
        
        
Answer:
The answer to your question is:
Step-by-step explanation:
Data
f(x) = -2x² + 8x - 2
Process
                 -2x² + 8x = y + 2
                 -2(x² - 4x + 4) = y + 2 - 8 
                 -2(x - 2)² = y - 6
                     (x - 2)² = 1/2 (y - 6)
Vertex = (2, 6)
Axis of symmetry =   x = 2
y-intercept
                  f(0) = -2(0)² + 8(0) - 2
                  f(0) = 0 + 0 - 2
                  f(0) = -2
Domain    (-∞, ∞)
Range    (-∞, 6]
See the graph below