Answer: D
Step-by-step explanation:
Answer:
-1/2
Step-by-step explanation:
cos(x+pi) = -cos(x), so the answer is -1/2.
So simple... 3\ll=27\100 which equals 27.0 or 0.27
Answer:
3 22/45
Step-by-step explanation:
Answer:
C) 20, 4
Step-by-step explanation:
X = 5y
2x + 5y = 60
substitute in 5y for x: 2(5y) + 5y = 60
10y + 5y = 60
15y = 60
y = 4
x = 5y
x = 5(4) = 20