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Mrrafil [7]
2 years ago
9

Evaluate the function.

Mathematics
1 answer:
telo118 [61]2 years ago
3 0

f(x) = x² - 2x - 7

f(-1), this means that x = -1.

Since you need to find f(-1), substitute/plug in -1 into "x" in the function:

f(x) = x² - 2x - 7       Plug in -1 into "x"

f(-1) = (-1)² - 2(-1) - 7

f(-1) = 1 + 2 - 7

f(-1) = -4          Your answer is B

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First we must figure out what the question means. It is asking how the absolute value of 3+10 is equivalent to the absolute value of 3 plus the absolute value of ten.

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OLga [1]

Height of the pentagon = 9 ft

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area of pentagon = \frac{s^{2}n}{4 tan\left ( \frac{180}{n} \right )}

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tan is the tangent function calculated in degrees

\\ \\\\area of pentagon = \frac{3^{2}(5)}{4 tan\left ( \frac{180}{5} \right )}\\\\\\area of pentagon = \frac{9(5)}{4 tan\left ( 36 \right )}\\\\area of pentagon = \frac{45}{4  ( 0.7265 )}\\\\area of pentagon = \frac{45}{2.906}\\\\area of pentagon = 15.4852

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Volume of the pentagon = 15.4852 (9)

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