Does anyone understand this (photo attached)
1 answer:
An adult and 5 children rent skates. it costs $4 per adult and a total of 16 Dollar...
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It costs Mikael $4 to make a bike bag and he sells each for 5 Dollar. He has made a profit of 16 Dollar so far...
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It was 16°C, it began falling 4°C per hour until it reached 5°C...
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Answer:
If the kid walks for the dotted line, the distance is 36ft.
Now, you can see that this is a triangle rectangle, then we must have that:
x^2 + (x + 6)^2 = 36^2 (the Pythagorean theorem)
Now we must solve this for x.
x^2 + x^2 + 2*6*x + 36 = 36^2
2*x^2 + 12*x -1260 = 0
The solutions for this equation are:
the solutions are:
x = (-12 - 101.1)/4 = -28.78
x = (-12 + 101.1)/4 = 22.3
Then we have x = 22.3 ft
The lenght of the path following the cathetus is:
D = x + x + 6 = 2*22.3ft + 6ft = 50.6ft
Then the difference between the distances is:
Diff = 50.6ft -36ft = 14.6ft