Answer:
we need to know the variables
Step-by-step explanation:
 
        
             
        
        
        
Descent  = 10 feet
Time required = 2 1/2 minutes.
The rate of descent = (10 feet)/(2.5 mn) = 4 ft/min
In 6 minutes, the descent will be
(4 ft/min)*(6 min) = 24 ft
Answer:
(a) 4 feet/minute
(b) 24 feet
        
             
        
        
        
Answer:
54
Step-by-step explanation:
 
        
             
        
        
        
2/5 at the top nd bottom, but 0/5 on the sides. So 2/5 + 0/5= 1/5
        
             
        
        
        
Answer:
x = 200
Step-by-step explanation:
Given
 x -
 x -  y = 30 ← substitute y = 15 into the equation
 y = 30 ← substitute y = 15 into the equation
 x -
 x -  × 15 = 30 , that is
 × 15 = 30 , that is
 x - 10 = 30 ( add 10 to both sides )
 x - 10 = 30 ( add 10 to both sides )
 x = 40 ( multiply both sides by 5 to clear the fraction )
 x = 40 ( multiply both sides by 5 to clear the fraction )
x = 200