Prove the identity. cos (x + y)
1- tanx tany
cosx cosy
Note that each Statement must be based on a Rule chos
the right of the Rule.
Statement

What is the correlation coefficient for the data? don't forget to turn the diagnoisticon (in the catalog menu of the calculator). r = answer (round to the nearest thousandth)

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

The function show two sisters' savings account and the rate at which they plan to deposit money