Answer:
D
Step-by-step explanation:
Cos^2 2x=1/4
Cos 2x =+-1/2
2x=z
Cos z=+-1/2
z1=pi/3
z2=11pi/3
z1 and z2 are possible.
x1=pi/6
x2=11pi/6
Answer:
6:10 -> simplfied is 3:5
Step-by-step explanation:
This question is really is if you think about it for a while. If you have a ratio that is like 6:10 or 6/10 all you have to do is multiply it by two (since it can only go in two times in this ratio). When you simplfy your answer, you will get 3:5.
Hope this helped you guys!
About 10 gallons is your answer
Answer:
21 = k
Step-by-step explanation:
Vertical angles are equal
170 = 6k+44
Subtract 44 from each side
170-44 = 6k+44-44
126 = 6k
Divide each side by 6
126/6 = 6k/6
21 = k
If you're asking 1.67/6 the answer is 0.276 which rounds to 0.28
