Express sin(-1709) as a function of a positive acute angle.​

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.