Answer:
Step-by-step explanation:
I understand that there are 2 problems here, that's right?
1, The total time T to fly from New York to Los Angeles:
Time= Distance/average speed
2, The problem with the race:
A) The total time for the race is:
[tex]t=\frac{0.5}{r} +\frac{22}{15r} + \frac{6}{r+5}[/tex]
B) If you can swim at 2 miles per hour, that means r=2.
We replace r=2 and we will find the total time that we need like:
[tex]t=\frac{0.5}{2} +\frac{22}{15*2} + \frac{6}{2+5}= 0.25 + 0.73333+ 0.85714=1.84047[/tex]
For rounding the answer: 1.84047 hours= 110 minutes
a. The model that should be written should be [tex]t = 0.5\div r + 22\div 15r + 6\div r + 5[/tex]
b. The time taken for completing the race should be 110 minutes.
a. Since
we know that
[tex]Time = distance \div speed[/tex]
So,
[tex]t = 0.5\div r + 22\div 15r + 6\div r + 5[/tex]
b. Here r = 2
So,
[tex]t = 0.5\div 2 + 22\div 15\times 2 + 6\div 2 + 5[/tex]
= 0.25 + 0.73333 + 0.85714
= 1.84047 hours
= 110 minutes
Hence,
a. The model that should be written should be [tex]t = 0.5\div r + 22\div 15r + 6\div r + 5[/tex]
b. The time taken for completing the race should be 110 minutes.
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