<PRE><B>Question 818363</B>
y = 0.2x^2 - 10x + 6
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the above quadratic equation is in standard form, with a=0.2, b=-10, and c=6
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to solve the quadratic equation, by using the quadratic formula, plug this:
0.2 -10 6
into this: https://sooeet.com/math/quadratic-equation-solver.php
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the two real roots (i.e. the two x-intercepts), of the quadratic are:
x = 49.3926218
x = 0.607378165
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What is the diameter of the lake?  Round to the nearest thousandth:
49.3926218 - 0.607378165 = 48.785243
answer:
48.785
NOTE: the length units of variable x were not given in the problem statement, could be foot, meter, mile, km, etc.)
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Convert fractions, decimals, and percents:
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Calculate and graph the linear regression of any data set:
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