Answer:
y= 13/7x+90/7
Step-by-step explanation:
 
        
             
        
        
        
Answer:
6x2 + 23x + 7 = 0
Factorization:
(2x + 7)(3x + 1) = 0
Solutions based on factorization:
2x + 7 = 0   ⇒   x1 = −7
2
 = −3.5
3x + 1 = 0   ⇒   x2 = −1
3
 ≈ −0.333333
Extrema:
Min = (−1.916667, −15.041667)
Step-by-step explanation: hope this helps
 
        
             
        
        
        
Answer: C.  
Step-by-step explanation:
Given: Box contains 8 green balls and 4 purple balls.
Total balls = 8+4 = 12
event 1 = first picking green ball 
event 2 = second picking purple balls.
As first ball was replaced, that means both events are independent.
Probability that you have selected a green ball and then a purple ball = P(purple ball )
Formula for probability = 
Probability of selecting a purple ball (second pick)= 

The required probability  , so C is correct option.
, so C is correct option.
 
        
             
        
        
        
Answer:
16m
8m
50.24m
200.96m^2
Step-by-step explanation:
13. 8*2=16
14. 8m
15. 2pi r = 2* pi* 8= 50.24
16. pi r^2 = pi * 8^2= 200.96m^2