4 years ago

A survey in one middle school showed that 3 out of 5 students

Mathematics

1 answer:

Anestetic [448]4 years ago

6 0

Take 3/5 of 485 you got it

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larisa86 [58]

Answer:

525 x 1,050

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Step-by-step explanation:

Let 'L' be the length parallel to the river and 'S' be the length of each of the other two sides.

The length of the three sides is given by:

$2S+L=2,100\\ L=2100-2S$

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$A=S*L\\A=S(2100-2S)\\A=2100 S -2S^2$

The value of 'S' for which the area's derivate is zero, yields the maximum total area:

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4 years ago