Answer:
b1 = 2 ; r = 3
Step-by-step explanation:
Given that :
if b3 −b1 = 16 and b5 −b3 = 144.
For a geometric series :
Ist term = a
Second term = ar
3rd term = ar^2
4th term = ar^3
5th term = ar^4 ;...
If b3 - b1 = 16;
ar^2 - a = 16
a(r^2 - 1) = 16 - - - (1)
b5 - b3 = 144
ar^4 - ar^2 = 144
ar^2(r^2 - 1) = 144 - - - - (2)
Divide (1) by (2)
a(r^2 - 1) / ar^2(r^2 - 1) = 16 /144
a / ar^2 = 1 / 9
ar^2 = 9a
Substitute for a in ar^2 - a = 16
9a - a = 16
8a = 16
a = 2
From ar^2 - a = 16
2r^2 - 2 = 16
2r^2 = 16 + 2
2r^2 = 18
r^2 = 18 / 2
r^2 = 9
r = √9
r = 3
Hence ;
a = b1 = 2 ; r = 3
Answer:
c, vertical
Step-by-step explanation:
blablablablablanlabla
Answer:
1. The like terms are 11x and 2x and the terms are 11x and 2x
2. The like terms are 9x and -5x and the terms are 9x and -5x
3. the like terms are (21x and x) and (6 and -5) and the terms are 21x, 6, -x, and -5.
4. The like terms are (8x and -3x) and (14 and 1). And the terms are 8x, 14, -3x, and 1.
5/7=110/154 so the answer is 154
