Which of the following statements are useful in deriving the law of sines? Check all of the boxes that apply.

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Solve the equation by completing the square. x^2+2x=17

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.