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

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18