53.3
Step-by-step explanation:
Make an equation.
 40y = 3x
zy=4x
Substitute y 
 
        
             
        
        
        
Answer:  1) D
2) C
Step-by-step explanation:
1. The blue algae has an initial mass of 20 kg and doubles its mass every hour. Then after t hours, the mass of blue algae is
2. The green algae has an initial mass of 160 kg and grows at a constant rate of 0.20 kg per minute. Then after t hours (60t minutes), the mass of green algae is
Part I) At t=3:
The mass of green algae has 196-160=36 kg more mass at 3 hours.
Part II) At t=4:
The blue algae has 320-208=112 kg more mass at 4 hours.
 
        
             
        
        
        
Answer:
12,000 containers
Step-by-step explanation:
Given : 200 milk cartens are there
 60 milk cantainers are there in each cartens. 
to find are there in all 
200 × 60 = 12,000 containers in all 
 
        
             
        
        
        
Answer:
C. he did not multiply the numerator by 2
Step-by-step explanation:
To find an equivlent fraction, you must multiply the numerator and denominator by the same thing.