SOMEONE PLEASE HELP! IVE BEEN ASKING FOR DAYS AND ITS DUE TODAY. Please provide a step by step explanation. Thank you.

The complex numbers $z$ and $w$ satisfy $|z| = |w| = 1$ and $zw \ne -1.$

(a) Prove that $\overline{z} = \frac{1}{z}$ and $\overline{w} = \frac{1}{w}.$

(b) Prove that $\frac{z + w}{zw + 1}$ is a real number.

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account