Answer:
c
Step-by-step explanation:
Answer:3/10
x is 1/6 so 3 * x is 3/6. 3/6 - 1/5 is 15/30 - 6/30 = 9/30. then simplify so the answer is 3/10.
18.5 or 18 1/2
9 plus 9 is 18. 1/8 plus 3/8 is 4/8 or 1/2. so 18 1/2
the answers is -4 for this exerxises
64.62
We have cos( x - y ) = cosxcoy + sinxsiny <=> cos ( π - x ) = cosπcosx + sinπsinx <=> cos ( π - x ) = (-1)cosx + 0sinx = -cosx;
