The speed of a stream is 4km/h. A boat travels 6 km upstream in the time it takes to travel 12 km downstream. What is the speed
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Answer z=2
See picture attached for the math
<u>Step-by-step explanation:</u>
Here we have , sin x=7/25( given sin x = 725 which is not possible ) , . Let's find tan (x - pi/4):
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Now ,
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Let be the line that passes through both points.
We know that and
. So:
Solving the system, we get that a= -1 and b = 6.
So the line is equal to .