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Brums [2.3K]
2 years ago
10

FIRST PERSON WHO ANSWERS GETS BRAINLIST

Mathematics
1 answer:
kipiarov [429]2 years ago
6 0

Answer:

Perimeter of a polygon with 31 sides = (side length) x 31 = 279 units

Area of a polygon with 31 sides = (n x Side2 x cot (Π/n))/4 = (n x 92 x cot (Π/31))/4 = 6173.16 square units

Sum of the interior angles of a polygon with 31 sides = (n-2) x 180 degrees = (31-2) x 180 degrees = 5220 degrees

Interior Angle of a polygon with 31 sides = (n-2) x 180/n degrees = (31-2) x 180/31 degrees = 168.38 degrees

Exterior angle of a polygon with 31 sides = 180 - Interior Angle = 180 - 168.38 = 11.61 degrees

Inradius = Radius of In-circle = (side length) x cot (Π/31) = 9 x cot 5 = 88.5 units

Circumradius = Radius of Circum-circle = (side length) x cosec (Π/31) = 9 x cosec 5 degrees = 88.96 units

Symmetry Group = D31 31 rotational symmetries and 31 reflection symmetries. The "D" stands for di-hedral.

Step-by-step explanation:

here is your answer if you like my answer please follow

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vivado [14]

Answer:

The equation to represent the rate of receding water level is                     L = 34 (0.5)^{d}   .

Step-by-step explanation:

Given as :

The initial level of water in river = 34 feet

The rate of receding water level = 0.5 foot per day

Or, The rate of percentage of receding water level = 50 % per day

Let the level of water after d days = L

Now,

The level of water after d days = initial level of water × ( (1-\dfrac{\textrm Rate}{100})^{Time}

I.e L = 34 × ( (1-\dfrac{\textrm 50}{100})^{d}

∴  L = 34 × (0.5)^{d}

Hence The equation to represent the rate of receding water level is                L = 34 (0.5)^{d}   . Answer

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Lelu [443]

Step-by-step explanation:

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4 0
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Alenkasestr [34]

8 x \frac{1}{3}

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2 years ago
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The ratio of girls to boys in Liza’s classroom is 5 to 4. How many girls are in her classroom if there is a total of 27 students
andrezito [222]

Answer:

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Step-by-step explanation:

Let

x-----> the number of girls

y-----> the number of boys

we know that

x+y=27 -----> equation A

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isolate the variable y

y=\frac{4}{5}x -----> equation B

Substitute equation B in equation A

x+\frac{4}{5}x=27

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S_A_V [24]

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Step-by-step explanation:

1 x -25 = -25

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