Answer:
C.
Step-by-step explanation:
5z - 7, you would say 5 times z minus 7, which is the same as 5 less than th product of 7 and a number z
16.2
Use the law of cos
c^2 = 8^2+10.4^2-2*8*10.4*cos(122.2 degrees)
=260.83
c = √260.83 = 16.15
A for sure
