Answer:
2π/3, 4π/3
Step-by-step explanation:
I interpret your question as asking us to solve the equation
2cos(x) + 1 = 0
2cos(x) = -1
cos(x) = -½x
x = arccos(-½), 0 ≤ x ≤2π
Since the cosine is negative, x must be in the second or third quadrant.
Referring to the unit circle, we find that
x = 2π/3 (120°) or x = 4π/3 (240°)
Answer:
H=12
Step-by-step explanation:
12-8=4
hope this helps!!
Answer:
1. £123120
2. £13.69
3.
4. £1200
5. £105
Step-by-step explanation:
1. 108000 multiplied by 114% = 123120
2. 18.5 multiplied by 1-0.26 = 13.69
3.
4. x (1.65) = 1980
x=1200
5. 113.4 = 1.08x
x= 105
I don't know about #3
Answer:
9 4/5
Step-by-step explanation:
I belive you meant 49/5 where the correct answer would be 9 4/5
Answer:
D
Step-by-step explanation:
