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8 votes
Please please please help

Please please please help-example-1
User Yelizaveta
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1 Answer

26 votes
26 votes

Answer:r=14°

Explanation:

(5r-5)°+ (8r+3)°=180

(Sum of angles on a straight line =180°)

Collect like terms

5r+8r-5+3=180

13r-2=180

13r=180+2

13r=182

r=182/13

r=14°

User Dario Ferrer
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2.7k points