Answer:
≈85.43
Step-by-step explanation:
apply the binomial theorem to the square



≈85.43
Hope this helps
Do you mean the percentage or just total value? 9.47-8.75=$0.72
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
An inconsistent system graphs two parallel lines. These parallel lines will never cross. Therefore there are no solutions.