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Marianna [84]
3 years ago
11

How does doubling the side length of a rectangle affect its area

Mathematics
1 answer:
baherus [9]3 years ago
7 0
Doubling the side-lengths will multiply the area by four.

Proof:
Let the side-lengths of the rectangle by x and y.  Clearly, the area will be x*y=xy.  The new rectangle will have side-lengths 2x and 2y, and thus area 2x*2y=4xy.  4xy/xy=4 - hence, the new rectangle has four times the area of the old one.
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sdas [7]

solution:

x^{2}+12x-7=0\\add 7 to both side of the equation\\x^{2}-12x=7\\to creat a trinomial square on the left side of the equation.\\find a value that is equal to the square of b and the cofficent of x.\\(\frac{b}{2})^2=(-6)^2\\add the term to each side of the equation\\x^2-12x+(-6)^2=7+(-6)\\x^2-12x+36=43\\(x-6)^2=43\\solve the equation for x.\\take the square root of each side of the equation to the set up the solution x,\\(x-6)^2.\frac{1}{2}=\pm \sqrt{43}\\x-6=\pm \sqrt{43}\\x=6\pm \sqrt{43}

4 0
3 years ago
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Help I don’t understand
OverLord2011 [107]
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3 years ago
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prohojiy [21]
Reciprocal
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5 0
3 years ago
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If side b measures 5√3, what is the length of side c?
Leviafan [203]

Answer:

10

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6 0
2 years ago
It is possible to multiply a 3 x 5 matrix and a 3 x 5 matrix.<br> O True<br> O False
oksian1 [2.3K]

Answer:

False

Step-by-step explanation:

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In this case, the number of columns in the first matrix is 5 and the number of rows in the second column is 3 therefore they aren't the same value, hence, cannot be multiplied

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2 years ago
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