Is this a polygon? Yes or no

Mathematics

2 answers:

Alja [10]3 years ago

8 0

A polygon should have straight lines so the answer is no

katovenus [111]3 years ago

5 0

Answer: No

Step-by-step explanation:

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What is the perimeter of the trapezoid with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8)? Round to the nearest hundredth

EleoNora [17]

Check the picture below.

so... you can pretty much see how long RS and QT are, you can just count the units off the grid.

now, let's find QR's length

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&Q&(~ 8 &,& 8~) 
% (c,d)
&R&(~ 14 &,& 16~)
\end{array}~~ 
% distance value
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
QR=\sqrt{(14-8)^2+(16-8)^2}\implies QR=\sqrt{6^2+8^2}
\\\\\\
QR=\sqrt{36+64}\implies QR=\sqrt{100}\implies QR=10$

and let's also find the length for ST

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&S&(~ 20 &,& 16~) 
% (c,d)
&T&(~ 22 &,& 8~)
\end{array}~ 
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
ST=\sqrt{(22-20)^2+(8-16)^2}\implies ST=\sqrt{2^2+(-8)^2}
\\\\\\
ST=\sqrt{4+64}\implies ST=\sqrt{68}\implies ST=\sqrt{4\cdot 17}
\\\\\\
ST=\sqrt{2^2\cdot 17}\implies ST=2\sqrt{17}$

so, add the lengths of all sides, and that's the perimeter of the trapezoid.

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The answer should be x = 6

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Mademuasel [1]

The easiest way to do it is to make the numbers into decimals. All you need to do is divide them.

To convert 3/4 into a decimal just divide 3 by 4.

3 / 4 = .75

To get 5 1/2 into a decimal just ignore the 5 for now and divide the 1 by 2.

1 / 2 = .5

Now add the 5 back on and you have 5.5

So far you have converted the equation from (3/4) / 5 1/2 to .75 / 5.5

Now just divide .75 by 5.5

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-BARSIC- [3]

Answer:

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radius is 2

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=3.14 x 4

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They paid their pitcher $10 million and their shortstop $2 million

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