Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
- 10 liters of orange juice
- 5 liters of champagne
Step-by-step explanation:
Let c represent the number of liters of champagne Lauren uses. Then (15-c) will be the number of liters of orange juice. The total cost of the mix will be ...
   12c +1.50(15-c) = 5.00(15)
   10.5c = 52.50 . . . . . subtract 22.50, simplify
   52.50/10.5 = c = 5 . . . . divide by the coefficient of c
Then the amount of orange juice is ...
   15 -c = 15 -5 = 10 . . . . liters
Lauren should use 5 liters of champagne and 10 liters of orange juice.
 
        
             
        
        
        
Answer:
1/18
Step-by-step explanation:
there are 12 marbles in the bag
P(choose red) = 2/12 = 1/6
P(choose blue after replacement) = 4/12 = 1/3
P(choose red, then blue with replacement) = (1/6)(1/3) = 1/18
 
        
             
        
        
        
80x70= y and then 400 - y= your answer! Ignore the four in. Deep part
        
             
        
        
        
Answer:
A=63.6 approximately 
Step-by-step explanation:
P=14.28
p=1/4(2pi*r)
p=1/2pi*r
14.28=1/2pi*r
28.56=3.14*r
r=9...... approximately 
A=1/4pi*r^2
A=0.25*3.14*81
A=63.6......approximately