Answer:
- 3a³ + 5a² - 3a + 7
Step-by-step explanation:
Given
(a³ - 2a + 5) - (4a³ - 5a² + a - 2)
Distribute both parenthesis noting the second is distributed by - 1
= a³ - 2a + 5 - 4a³ + 5a² - a + 2 ← collect like terms
= (a³ - 4a³ ) + 5a² + (- 2a - a) + (5 + 2)
= - 3a³ + 5a² - 3a + 7
 
        
             
        
        
        
Answer:
What is the area of the triangular base?
 8 square feet
What is the length of edge DF? 
 4 feet
Step-by-step explanation: I just took it on edge
 
        
                    
             
        
        
        
Answer:
Parallel equation is  y=-2/3x+5
Perpendicular equation is y= 3/2x + 4
Step-by-step explanation:
 
        
             
        
        
        
Answer:
27.5 mph 
Step-by-step explanation:
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. I
After you add up all the numbers you get : 330 mph 
330 mph divided by 12 is 27.5 
27.5 mph is the answer :)