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ZanzabumX [31]
2 years ago
13

Below is a magic square, meaning that the sum of the numbers in each row, in each column, and in each of the $2$ main diagonals

are equal. What is the value of $n$? [asy]size(125); for(int i = 0; i<4; ++i) { draw((0,i)--(3,i),linewidth(1)); } for(int j = 0; j<4; ++j) { draw((j,0)--(j,3),linewidth(1)); } label("$n-2$",(.5,.5)); label("3",(.5,1.5)); label("$n+2$",(.5,2.5)); label("$n+3$",(1.5,.5)); label("$n-1$",(1.5,1.5)); label("$1$",(1.5,2.5)); label("$2$",(2.5,.5)); label("$2n-5$",(2.5,1.5)); label("$n$",(2.5,2.5)); [/asy]
Mathematics
1 answer:
Mariulka [41]2 years ago
4 0

The property  of equality of the rows, columns, and diagonals in the magic

square can be used to find the value of <em>n</em>.

The value of <em>n</em> is 6

Reasons:

The magic square can be presented as follows;

\begin{array}{|c|c|c|}n-2&3&n + 2\\n + 3&n - 1&1\\2&2 \cdot n - 5&n\end{array}\right]

Given that the sum of the numbers in each row and in each column and in

each of the two diagonals are equal, to find the value of <em>n</em>, two rows having

different number of the variable <em>n</em> can be equated as follows;

The top row = n - 2 + 3 + n + 2 = The bottom row = 2 + 2·n - 5 + n

n - 2 + 3 + n + 2 = 2 + 2·n - 5 + n

2·n + 3 =  3·n - 3

3·n - 3 = 2·n + 3 (symmetric property)

3·n - 2·n = 3 + 3

n = 6

Learn more here:

brainly.com/question/17355019

brainly.com/question/20477897

brainly.com/question/8183549

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3 years ago
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Answer:

Step-by-step explanation:

Perimeter of Square = 40 cm

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=[side*side]-[\frac{1}{2}*b*h+\frac{1}{2}*b*h]\\\\=[10*10]-[\frac{1}2}*3*10+\frac{1}{2}*10*6]\\\\=100-[3*5+5*6]\\\\=100-[15+30]\\\\=100-45\\\\=55cm^{2}\\

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6 0
3 years ago
Rewrite in simplest terms: (4x+5)+(−5x−1) pls help
IrinaVladis [17]

Answer:

-x + 4

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(4x+5)+(−5x−1)

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7 0
2 years ago
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In a triangle, the measure of the first angle is twice the measure of the second angle. The measure of the third angle is 64 deg
Xelga [282]
Argument
Let the second angle = x
Let the first angle = 2x
Let the third angle = x + 64

Substitute and Solve
x + 2x + x + 64 = 180 Collect the like terms on the left.
4x + 64 = 180 Subtract 64 from both sides.
4x = 180 - 64
4x = 116 Divide by 4
x = 116 / 4
x = 29

Conclusion
x = 29
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Answer
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7 0
3 years ago
[(-33) + 46 + 68] - |15 - 61|
Gemiola [76]

Answer:

127

Step-by-step explanation:

[(-33) + 46 + 68] - (15 - 61)

(114-33)-(-46)

81+46

127

6 0
3 years ago
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