Question

Solve for the value of R

Answer 1

I think 13 I don’t know for sure though

Answer 2

13

Explanation:

Since the angles form 180 degrees, it will be what the equation is equal to.

Make the equation:

8r + 5 + 5r + 6 = 180

Combine like terms:

8r + 5 + 5r + 6 = 180

13r + 5 + 6 = 180

13r + 11 = 180

Solve:

13r + 11 = 180

-11 -11

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13r = 169

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13 13

r = 13

Hope this helped.