If there is a test with 32 questions and I need a 70% to pass how many can I get wrong and explain why please help 10 POINTS!!!!
2 answers:
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For the largest area, half the fence is used parallel to the river, and the other half is used for the two ends of the rectangular space.
The dimensions are 475 m by 237.5 m.
_____
Let x represent the length along the river. Then the area (A) is found as
.. A = x*(950 -x)/2
This equation describes a parabola with its vertex (maximum) halfway between the zeros of x=0 and x=950. That is, the maximum area is achieved when half the fence is used parallel to the river.
The dimensions are 475 m by 237.5 m.
_____
Let x represent the length along the river. Then the area (A) is found as
.. A = x*(950 -x)/2
This equation describes a parabola with its vertex (maximum) halfway between the zeros of x=0 and x=950. That is, the maximum area is achieved when half the fence is used parallel to the river.
Income of the first account after x years:
Income of the second account after x years:
Equating the above tw values we get the equation:
Solving the above equation for x:
Answer 8 years.
Income of the second account after x years:
Equating the above tw values we get the equation:
Solving the above equation for x:
Answer 8 years.