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Charra [1.4K]
1 year ago
11

Please please please help

Mathematics
1 answer:
Ludmilka [50]1 year ago
7 0

Answer:r=14°

Step-by-step 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°

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