The base should be 4. 
Area=1/2* b *h
4*7=28/2=14. 
        
             
        
        
        
Step-by-step explanation:
p<5 that's the answer for the question
 
        
             
        
        
        
Answer:85.5 
Step-by-step explanation:
Use calculator 
 
        
             
        
        
        
I just did it the answer is C
        
             
        
        
        
Answer:
10x² + 6x + 3xy + 3y - y²
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor, as shown
(2x + y)(5x - y + 3)
= 2x(5x - y + 3) + y(5x - y + 3) ← distributing 
= 10x² - 2xy + 6x + 5xy - y² + 3y ( collect like terms )
= 10x² + 6x + 3xy + 3y - y²