Answer:
nine
Step-by-step explanation:
Answer:
For the first one the answer is:
<K = 31°
Sorry I don't know the second one.

so as you can see the common ratio is 2, and the first term is 1/2,

Answer:
yes???
Step-by-step explanation:
your question either doesn't make sense or I just don't know
Answer:
x = 9
Step-by-step explanation:
Sum of all angles of a triangle = 180
63 + 7x + 6x = 180
63 + 13x =180
13x = 180 - 63
13x = 117
x = 117/13
x = 9