How many sides does a regular polygon have each interior angle of which is measure 120

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a. r'(–3, 1),  s'(–3, 5)b. r'(–1, 3),  s'(–5, 3)c. r'(1, 3),  s'(5, 3)d. r'(5, 3),  s'(1, 3)

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: