Which formula defines the sequence f1=5, f2=9, f3=13, f4=17, f5=21? a. f1=5, fn=4+fn-1 for n2
b. f1=5, fn=9+fn-1 for n2
c. f1=5, fn=2+fn-1 for n2
d. f1=9, fn=5+fn-1 for n2

Abe is a triangle. can you use the sss postulate or the sas postulate to prove triangle abc = triangle aed? by sss only neither apply both apply by sas only

In the diagram of circle o, what is the measure of zabc?

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units