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castortr0y [4]
3 years ago
14

What is the perimeter of a triangle that has side measures of the following

Mathematics
1 answer:
defon3 years ago
8 0
I got 3x^2 + 12x + 4. I recommend you verify my answer, so you have to combine like terms in the first expression then add all the expressions.
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What is the greatest common factor of 73 and 30
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Please help!!!!.................,
dangina [55]

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I think it's 45 lmk if I'm wrong lol

5 0
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My question is in the picture please help. First answer gets brainliest​
Mandarinka [93]
Round 1 player 1 because 12 is the greatest number
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a metal alloy weighing 3 mg and containing 40% copper is melted and mixed with 2 mg of pure copper. what percent of the resultin
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4 0
3 years ago
How to solve this problem?
valentinak56 [21]

Very nice handwriting but the math and English are confusing.

Let's assume we're told

\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2

The subscript is important.

I think we're told the similar sum with 11 gives the smallest possible value for the sum. This is a rather cagey way of telling us 11 is the mean of the nine points. The mean is the number which minimizes the sum of squared deviations.

\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2 = \sum x_i^2 - 20 \sum x_i + 9(100)

\displaystyle  \sum x_i^2=  20 \sum x_i  - 900

If 11 is the mean, the sum of the points is 9(11)=99.

\displaystyle  \sum x_i^2=  20 (99)  - 900 = 1080

Answer: 1080

6 0
3 years ago
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