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3 years ago

HELLP What is the formula for finding the perimeter of a polygon?

Mathematics

2 answers:

Kaylis [27]3 years ago

8 0

Answer:

P=n*s

Step-by-step explanation:

n is the number of sides and s is the length of any one side.

Rzqust [24]3 years ago

8 0

Answer:

It depends on the polygon.

Perimeter is the distance around a figure, so the formula changes for what type of polygon it is. For example, a square would be 4l or the length of one side times 4.

To find the perimeter for any polygon, regular or irregular, use the distance formula for each side. Then add all values together.

The distance formula is $\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Where $(x,y)$ is one edge and $(x_2 , y_2)$ is another edge, both belonging to the same side. This formula calculates the unit length of a side of your choice. For irregular figures, you have to use this formula for every side. For regular figures, just multiply the distance by how many sides there are.

Distance calculator for 2d grid: https://www.calculatorsoup.com/calculators/geometry-plane/distance-two-points.php

Distance formula explanation: https://www.khanacademy.org/math/geometry/hs-geo-analytic-geometry/hs-geo-distance-and-midpoints/v/distance-formula#:~:text=Learn%20how%20to%20find%20the,distance%20between%20any%20two%20points.

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Malliki Williams earned a $48,000 from royalties on her cookbook.She paid a 28% income tax on these royalties. The balance wasin

Nikitich [7]

Answer:

$20000 and $14560

Step-by-step explanation:

First, we need to get the total tax paid by Malliki Williams

To get that, we have to multiply her income tax (28%) by total royalties ($48000)

28% of $48000 = $13440

Balance after tax = $48000 - $13440

Balance = $34560

She invested some of the balance ($34560) at the rate of

3.25% ---- First investment

1.75% --- Second investment

Assume her first investment is x dollars

Definitely, her second investment would be $34560 - x

3.25% of x + 1.75% (34560 - x ) = 904.8

0.0325x + 0.0175(34560-x) = 904.8 ----- Open the bracket

0.0325x + 604.8x - 0.0175x = 904.8 ------ Collect like terms

0.0325x -0.0175x =904.8 - 604.8

0.015x = 300 ------ Divide both sides by 0.015

x = 300/0.015

x = 20000

Remember that x represents her first investment

Her second investment is $34560 - $20000 =$14560

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3 years ago

Kim was walking down a rocky path. For 4 minutes, the elevation dropped uniformly. Altogether it dropped 8 feet. What was the ch

Natasha2012 [34]

Answer:

Change in elevation per minute = 2ft/min

Step-by-step explanation:

Change in elevation per minute = elevation ÷ time

Change in elevation per minute = 8÷4 = 2ft/min

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3 years ago

Verify the identity. <br> tan (x + pi/2) = -cot x

Leno4ka [110]

$\tan\left(x+\dfrac\pi2\right)=\dfrac{\sin\left(x+\frac\pi2\right)}{\cos\left(x+\frac\pi2\right)}=\dfrac{\sin x\cos\frac\pi2+\cos x\sin\frac\pi2}{\cos x\cos\frac\pi2-\sin x\sin\frac\pi2}=\dfrac{\cos x}{-\sin x}=-\cot x$

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3 years ago

Simplify 5/9x4 3/5x6 3/11x6/10 and 3 4/5x7 1/2

Sav [38]

Answer:

529/55 and 57/2

Step-by-step explanation:

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2 years ago

Two ships have a harbor entrance at the same time. The first ship is traveling at a constant 16 mph, while the second is traveli

stepan [7]

So hmm check the picture below

both ships leave at the same time, one is going 16mph, the other 20mph, 2hrs later on the road

at 16mph well, 2hrs is just 16+16, or 32 miles away
20mph for 2hrs, is 20+20, or 40 miles away

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again, recall, the angle is in degrees, so, when taking the cosine, make sure your calculator is in Degree mode

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3 years ago