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nadezda [96]
3 years ago
9

(5) • (-9).(-2) i need step by step

Mathematics
1 answer:
Gemiola [76]3 years ago
7 0

Answer:

90

Step-by-step explanation:

5 x -9 x -2

5 x 18

90

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The angles of a pentagon are x, x − 5 0 , x + 100 , 2x + 150and 2x + 300 . Find all the angles.
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Answer:

The interior angles are 70°,65°,80°,155° and 170°

Step-by-step explanation:

step 1

Find the sum of the interior angles of the pentagon

The sum is equal to

S=(n-2)*180°

where

n is the number of sides of polygon

n=5 (pentagon)

substitute

S=(5-2)*180°=540°

step 2

Find the value of x

Sum the given angles and equate to 540

x+(x-5)+(x+10)+(2x+15)+(2x+30)=540°

7x+50=540°

7x=490°

x=70°

step 3

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Step-by-step explanation:

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