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Luda [366]
3 years ago
13

PLs solve i will award brainlist

Mathematics
2 answers:
ollegr [7]3 years ago
7 0

Answer:

x = 120 degrees

Step-by-step explanation:

angle below x is 40 degrees because it is a corresponding angle.

x = 180 - 40 - 20 = 120 degrees

inysia [295]3 years ago
3 0

Answer:

x=120 I believe

Step-by-step explanation:

so using the left side, we can form the equation x+20+_=180

x+_=160

we know the 2 lines that are parallel, and they have a line through it (idrk what it's called)

_=40

x+40=160

x=120

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The other one is 90 minus 49 or 41 degrees
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Explain how you can use your compass to construct one-fourth the length of a segment.​
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Answer:

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Step-by-step explanation:

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Simplify the following
Nostrana [21]
It a or b that my answer
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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

b) Standard deviation = 41.19

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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3 years ago
Question 4(Multiple Choice Worth 1 points)
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Answer:

Ox=4 is the answer for the question

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