Answer:
i dont know it srry
Step-by-step explanation:
 
        
             
        
        
        
Answer:
y = 6x² -13x -5
Step-by-step explanation:
(1,-12) (2,-7) (5,80)
y = ax² + bx + c
-12 = a*1² + b*1 + c = a+b+c    (1)
-7 = 4a + 2b + c    (2)
80 = 25a + 5b + c   (3)
(2)-(1): 3a + b = 5    (4)
(3)-(2): 21a + 3b = 87   (5)
(4)*3:     9a + 3b = 15    (6)
(5)-(6):  12a = 72      a = 6
(4)                             b = -13
(2)                             c = -5
 
        
             
        
        
        
<h2><u>Solution</u> :-</h2>
Given : Radius of cylinder = 8 m
Height = 4 m
Volume of cylinder = πr²h cu. units 
= 22/7 × 8 × 8 × 4 m³
= 804.57 m³ (approx.) 
Curved surface area = 2πrh sq. units 
= 2 × 22/7 × 8 × 4 m²
= 201.14 m² (approx.) 
Total surface area = 2πr(r + h) sq. units
= 2 × 22/7 × 8 (8 + 4) m²
= 2 × 22/7 × 8 × 12 m²
= 603.43 (approx.) 
 
        
        
        
Answer:
It’s D. 4
Step-by-step explanation:
GOOD LUCK HOMIE AND USE A CALCULATO ;)
 
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
as b have no number given it means. its coefficent is 1