Answer:
x>-5
Step-by-step explanation:
-3 from both sides
Answer:
x > 1/2
Step-by-step explanation:
1/2 is a fraction just so you know
Hope this help's and I wont be showing work due to it being a test that I have seen sorry.
Answer:
0.72
Step-by-step explanation:
8 / 11 = 0.72
Answer:
False
Step-by-step explanation:
2cos^2(4x) - 1 = cos(8x)
cos(8 *pi/12) = cos(2pi/3) = cos(pi - pi/3) = - cos(pi/3)= 1/2, which is not 0
cos(8x) = 0
==> 8x = 0 or pi
==> x = 0 or pi/8