+50 common ratio of the geometric sequence with a1 = 18 and a4 = −2/3
is either options:
(1) 3
(2) -3
(3) 1/3
(4) -1/3
+50 can someone please answer this or at least try to help me im having so much trouble trying to figure it out i appreciate it alot
+208 The common ratio is r
a1=18, a4=-2/3
18, _, _, -2/3
-6/18=-1/3
-2/3 divided by 1/3=-1/3
18, -6, _, -2/3
18, -6, 2, -2/3
so (4) -1/3
is the right answer
