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Leto [7]
3 years ago
7

6x-22+12x+2=100 what the measure of ayx​

Mathematics
1 answer:
ladessa [460]3 years ago
8 0
6x+12x=100-2+22
18x=120
x=120/18=6.667
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The following data give the prices of seven textbooks randomly selected from a university bookstore.
swat32

Answer:

a) Mean = $121

Sum of deviations = $0

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Variance = 1696.67

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Step-by-step explanation:

We are given the following data:

$91 , $176 , $108 , $115 , $56 , $157 , $144

a) Mean and sum of deviations

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{847}{7} = 121

Sum of deviations =

-30 + 55 - 13 - 6 - 65 + 36 + 23 = 0

The sum of deviations is zero dollars.

b) range, variance, and standard deviation

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.

Sum of square of differences =

900 + 3025 + 169 + 36 + 4225 + 1296 + 529 = 10180

\sigma = \sqrt{\dfrac{10180}{6}} = 41.19\\\\\sigma^2 = 1696.67

Sorted data: 56, 91, 108, 115, 144, 157, 176

Range = Maximum - Minimum

Range = 176 - 56 = 120

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Algebra help. with asap
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9. You are planning a school carnival. The equipment costs $180 to rent. You plan to charge $4.00 per
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A college's lacrosse team will play 23 games next spring. Each game can result in one of 2 outcomes a win or a loss. Find the to
posledela

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3 years ago
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