What is the root of the polynomial equation x(x-2)(x+3) = 18? Use a graphing calculator and a system of equations.
1 answer:
9514 1404 393
Answer:
x = 3
Step-by-step explanation:
The equation can be rewritten to make use of the graphing calculator's ability to identify function zeros:
x(x -2)(x +3) -18 = 0
The attached shows x = 3 is the only real solution.
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We're not sure what "system of equations" is intended. Perhaps it is ...
y = 18
y = x(x -2)(x +3)
To create the expression we graphed, we effectively subtracted the first equation from the second.
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Given:
The radius of the cone = 14 ft
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To find the lateral surface area and the total surface area of the given cone.
Formula
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and
The total surface area of the cone is
where,
r be the radius and
l be the slant height of the cone.
Now
Taking r = 14 and l = 27 we get
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or, sq ft
Again,
sq ft
or, sq ft
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