Please use Law of Cosine to answer!

Step-by-step explanation:

13.) option d. side side angel ( as it has 2 sides and 1 angle )

14. ) cosine

16 ) formula of law of cosine

c = √a² + b² - 2ab • cos c

c = √31² + 35² - 2 • 31 • 35 • cos (48°)

c = 27.09

hope this answer helps you dear

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110