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snow_tiger [21]
3 years ago
10

Evaluate 9-b9−b9, minus, b when b=8b=8

Mathematics
2 answers:
adoni [48]3 years ago
7 0
It is negative 135.
-135
Slav-nsk [51]3 years ago
4 0

Answer:

its 1 like actually its 1

Step-by-step explanation:

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Join the center of the hexagon with the 2 base angles.

An equilateral triangle, with side length x, is formed.

(remark: a regular hexagon is made up of 6 equilateral triangles with equal length)

The height 2 \sqrt{3} forms 2 congruent right triangles with :

hypotenuse= x, side_1=x/2, and side_2= 2 \sqrt{3}.

From the pythagorean theorem we have:

x^{2} = ( \frac{x}{2} )^{2}+(2 \sqrt{3})^{2}

x^{2} =  \frac{ x^{2} }{4} +12

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thus, x=4.

The area of the triangle is 1/2 * 4 * 2 \sqrt{3}=6.93 (mm squared)

The area of the hexagon is 6* the area of the triangle = 42 (mm squared)


Answer: a. 42 (mm squared)
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Step-by-step explanation:

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