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WITCHER [35]
3 years ago
12

What is the sum of the interior angle Measures of an 11 - gin

Mathematics
1 answer:
creativ13 [48]3 years ago
6 0
\bf \textit{sum of all interior angles in a polygon}\\\\
S=180(n-2)\quad 
\begin{cases}
n=\textit{number of sides}\\
----------\\
n=\stackrel{11-gon}{11}
\end{cases}\implies S=180(11-2)

and surely you know how much that is.
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Suppose Y varies directly with X and Y equals 10 when X equals -3 what direct variation equation relates XNY what is the value o
xeze [42]

Answer:

Expression: Y = -10/3 X

Y = 10/3

Step-by-step explanation:

If Y varies directly as X, then;

Y∝X

Y = kX

k is the constant of variation

If Y = 10 and X = -3

10 = -3k

k = -10/3

Substitute k = -10/3 into the expression Y = kX

Y = -10/3 X

This gives the required expression

To get the value of Y when X = -1

Recall that Y = kX

Y = -10/3 (-1)

Y = 10/3

Hence the value of Y is 10/3

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Step-by-step explanation:

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3 years ago
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Talja [164]

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6 0
3 years ago
3. Three years ago, Jane was three times as old as Alice. In two years time, the sum of their ages will be 62. Determine their p
anzhelika [568]
3 yrs ago:

Alice - x 
Jane - 3x 

Fast forward 2 years... 1 year ago: 

Sum of their ages = 62


Equation to solve: x + 3x = 62 
                                4x = 62 
                               -----  -----
                                 4      4
 
                                 x = 15.5 

From this, we can deterime that Alice is 15 1/2 years old. 

Then, plug in 15.5 for x in 3x to find Jane's age. 

15.5 × 3 = 46.5

From this, we can determine that Jane is 46 1/2 years old. 


I hope this helps you to understand this problem better.


5 0
3 years ago
Read 2 more answers
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