Question

PLZ HELP!!! Plz answer ASAP And show work/ explain

Answer 1

100

Explanation:

5a+4a=9a

180/9=a

20=a

4a+x=180

(4 times 20)+x=180

80+x=180

x=100

Answer 2

5a

Explanation:

Just use the reflexive property / reflexive angles, 5a = x and 4a equals the remaining side.