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zheka24 [161]
3 years ago
6

А

Mathematics
1 answer:
ladessa [460]3 years ago
5 0

Answer:

x = 4

Step-by-step explanation:

AD = BC

8x - 12 = 20

8x = 20 + 12

8x = 32

\frac{8x}{8}  =  \frac{32}{8}

x = 4

to be sure

8x - 12 { = }^{?} 20

8 \times 4 - 12 { = }^{?} 20

32 - 12 { = }^{?} 20

20 = 20

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Solve 4(4f-9)=-(2-f)
Whitepunk [10]

Answer:

f = \frac{7}{15}

Step-by-step explanation:

1. 4(4f - 9) = -(2-f)               distribute the negative

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3. 16f - 9 = -2 + f            Subtract f on both sides

4. 15f - 9 = -2                  Add 9 on both sides

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What goes into 26.1 and 3.6
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What is the area of a regular hexagon (6 sides) whose
Ganezh [65]

Step-by-step explanation:

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The apothem divides equally each one of the equilateral triangles in two right triangles whose sides are circle's radius, apothem and half of the hexagon's side. Since the apothem forms a right angle with the hexagon's side and since the hexagon's side forms 60∘ with a circle's radius with an endpoint in common with the hexagon's side, we can determine the side in this fashion:

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As already mentioned the area of the regular hexagon is formed by the area of 6 equilateral triangles (for each of these triangle's the base is a hexagon's side and the apothem functions as height) or:

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=> Shexagon=6×62√3=216

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2 years ago
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