The rate of the wind is given to be 210 the rate of the plane in mid air is given as 830
<h3>Howe to solve for the rate of the plane and wind</h3>
In 7 hours the kilometer traveled =  4340
P + W = 4340/7 
= 620
P-W = 3120/3 hours
= 1040
2p = 1040 + 620
= 1660
p =830
W = 1040 - 830
= 210
Hence the rate of the wind is given to be 210 the rate of the plane in mid air is given as 830
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Answer:
0
Step-by-step explanation:
Cancel out x-y to x^2-Y^2 and you get x+y-x-y which is 0
 
        
             
        
        
        
Answer:
8, 0, -8, -12
Step-by-step explanation:
 
        
             
        
        
        
9514 1404 393
Answer:
   $1904.76
Step-by-step explanation:
The interest formula is ...
   I = Prt . . . . interest on principal P at rate r for t years
Solving for P, we find ...
   P = I/(rt) = 200/(0.07·1.5) = 200/0.105 ≈ 1904.76
The principal amount was $1904.76.
 
        
             
        
        
        
Equation is y=kx.  We have four chance to figure out k; hopefully they all give the same result
x=9, y=63,  y=kx becomes 63=k(9) so k=63/9=7
x=4, y=28, 28=k(4), k=7
The constant of proportionality is 7; we check  2×7=14, 11×7=77
Answer: k=7,   y=7x