3 years ago

3x - 1 = 1 - 3x solve the equation

Mathematics

1 answer:

Musya8 [376]3 years ago

6 0

Answer:

X=1/3

Step-by-step explanation:

Rearrange terms

3−1=1−3

3−1=−3+1

2 Add 1 11 to both sides of the equation

3 Simplify

4 Add 3 3x3x to both sides of the equation

5 Simplify

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Sample space = 17 + 7 + 4 = 28
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3 years ago

Alan recorded the points he scored on the basketball court in ms2 school yard. What is the mean absolute deviation of his scores

Alecsey [184]

Answer:

The mean absolute deviation is: 7.44

Step-by-step explanation:

Given

$Scores: 98, 78, 84, 75, 91$

Required

The mean absolute deviation

First, calculate the mean

$\bar x = \frac{\sum x}{n}$

$\bar x = \frac{98+78+84+75+91}{5}$

$\bar x = \frac{426}{5}$

$\bar x = 85.2$

The mean absolute deviation (M) is:

$M = \frac{1}{n}\sum|x - \bar x|$

So, we have:

$M = \frac{1}{5}(|98 - 85.2|+|78 - 85.2|+|84 - 85.2|+|75 - 85.2|+|91 - 85.2|)$

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Remove absolute brackets

$M = \frac{1}{5}(12.8+7.2+1.2+10.2+5.8)$

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$M = 7.44$

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2 years ago