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jeka94
3 years ago
8

A certain forest covers an area of 3400 km2 . suppose that each year this area decreases by 7.75% . what will the area be after

6 years?
Mathematics
1 answer:
timofeeve [1]3 years ago
5 0
Hey there,

Solution:
1 year = 7.75%
6 years = 7.75% x 6
             = 46.5%

100% = 3400 km^2
1% = 3400km^2 / 100
      = 11,560,000 / 100
      = 115,600
46.5% = 115,600 x 46.5
           = 5,375,400
Area left = 11,560,000 - 5,375,000
              = 6,185,000

Hope this helps :))

<em>~Top♥</em>
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You can use the fact that two expressions in equality can be considered to be equal to a third variable(not used in given context).

The system of equations that could be graphed to solve the equation given is

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The 2d graphs are usually expressed as y = f(x) on X-Y plane.

Taking the equation's expressions equal to y, we get

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