Answer:
the answer is B. (15,4) :
Step-by-step explanation:
 
        
             
        
        
        
-40 +2n= 4n -8(n+8)
-40 +2n= 4n -8n -64 
-40 + 2n = -4n -64
2n = -4n -64 +40 
2n=-4n-24
2n+4n=-24
8n=-24
N= -3 
Answer is n equals -3
        
                    
             
        
        
        
Answer: The 20th term is 100 
Step-by-step explanation: It adds by 6 each time 
-14, -8, -2, 4, 10, 16, 22, 28, 34, 40, 46, 52, 58, 64, 70, 76, 82, 88, 94, 100
 
        
             
        
        
        
Answer: Because the a-value is negative.
<u>Step-by-step explanation:</u>
The vertex form of a quadratic equation is: y = a(x - h)² + k    where
- "a" is the vertical stretch
- -a is a reflection over the x-axis
- h is the horizontal shift (positive = right, negative = left)
- k is the vertical shift (positive = up, negative = down)
Given: g(x) = - (x + 1)² - 3
                     ↓
                  a= -1
Since the a-value is negative, the parabola will be reflected over the x-axis which will change the curve from (U-shaped) to (∩-shaped). 
 
        
             
        
        
        
Answer: 90 mm cubed
Step-by-step explanation:
Formula = (L*W*H) / 2
5 * 12 * 3 = 60 * 3 = 180
180 / 2 = 90