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Lostsunrise [7]

2 years ago

13

a triangle with a perimeter of 36 inches is dilated with a scale factor of 2. what will be the perimeter of the image

1 answer:

sweet [91]2 years ago

7 0

Answer:

18

Step-by-step explanation:

36/4=9 9/2=4.5 4.5+4.5+4.5+4.5=18

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Step-by-step explanation:

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So I don't know how to write it, but I got this,

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140 subtracted from the square of a number the result is three times the number find the negative solution

natima [27]

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$Suppose~that~the~number~is~x.\\According~to~question,\\x^2-140=3x\\or, x^2-3x-140=0\\From~the~quadratic~formula,\\x = \frac{-(-3)+\sqrt{(-3)^2-4(1)(-140)} }{2(1)} ~and ~x= \frac{-(-3)-\sqrt{(-3)^2-4(1)(-140)} }{2(1)} \\or, x = \frac{3+\sqrt{9+560} }{2}~and~x=\frac{3-\sqrt{9+569} }{2}\\or, x = \frac{3+\sqrt{569} }{2}~and~x=\frac{3-\sqrt{569} }{2}\\So,~the~required~negative~number~is~\frac{3-\sqrt{569} }{2}.$

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