Let cos x = a, then
2a^2 + a - 1 = 0,
solving the quadratic equation, we have:
a = 0.5 or -1.
i.e. cos x = 0.5 or cos x = -1
for cos x = 0.5,
x = pi/3, 2pi - pi/3 = pi/3, 5pi/3
for cos x = -1,
x = pi
therefore, x = pi, pi/3, 5pi/3
Answer: B
Answer:
1
Step-by-step explanation:
Start at -0.5 and go toward 0.5.
From -0.5 to zero, it's a distance of 0.5.
From zero to 0.5, it's also a distance of 0.5.
Add the two distances, 0.5 + 0.5 = 1.
The distance between -0.5 to 0.5 is 1.
444 = x + (x-54)
x = 249
If there ate 54 fewer cheeseburgers than there should be 195 cheeseburgers and 249 hamburgers.
Your answer would be 249 hamburgers.
Answer:
Step-by-step explanation:
x+118 degrees =180 degrees
x +118 degrees-118degrees =180 degrees - 118 degrees
x =62 degrees
