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3 years ago

In the area of each triangular regions is as shown, what is the area of the polygon?

Mathematics

1 answer:

asambeis [7]3 years ago

7 0

The correct answer is: [C]: " 18 " {" 18 units " .} .
___________________________________________________
Explanation:
___________________________________________________
Add up the given areas, to get the total area of the given polygon:

3 + 5 + 8 + 2 =

(3 + 5) + 8 + 2 =

8 + 8 + 2 =

(8 + 8) + 2 =

16 + 2 =

" 18 " . The answer is: " 18 (units) " ; which is: Answer choice: [C]: " 18 " .
________________________________________________________

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3 years ago

Read 2 more answers

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nadya68 [22]

Answer:

a= 13.15 years

b= -0.62 years/$

Step-by-step explanation:

Hello!

Given the variables

Y: Age of a used car. (years)

X: Price of a sold used car. ($000)

The linear regression model is:

E(Y)= α + βXi

The estimated equation is:

^Y= a + bXi

$a= (\frac{sumY_i}{n} ) - b(\frac{sumX_i}{n} )$

a= 13.15 years

$b= \frac{(sumX_iY_i-\frac{(sumX_i)(sumY_i)}{n} }{sumX_i^2-(\frac{(sumX_i)^2}{n} )}$

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∑XY=712.9

Hope it helps!

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3 years ago