Respuesta :

Answer: a=25, 139 degrees, 41 degrees

Step-by-step explanation:

to find a:

180=2a-9+5a+14

180=7a+5

7a=175

a=25

m<ABQ:

5a+14

5(25)+14

125+14

139 degrees

m<BCR:

180-139

41 degrees

I think these are correct but im not completely sure :)