Question

medal for answer.
-4 , 8 , -16 , 32 . . .
a. arithmetic; 64, 128, 256
b. geometric, -64 , 128 , -256
c. geometric, -48 64 , -80
d. neither

Answer 1

-4,8,-16,32 is a geometric sequence - to get next term you multiply by -2

Answer 2

the next 3 terms are -64,128,-256

Answer 3

b is correct

Answer 4

can you help me with 2 more please?

Answer 5

ok

Answer 6

81, 27, 9, 3 . . . .

Answer 7

a. arithmetic , 0, -3 , -6
b. geometric, 0, -3 , -6
c. geometric, 1, 1/3, 1/9
d. neither.

Answer 8

hint: divide 27 by 81
9 by 27
3 by 9


what do you get?

Answer 9

if you get the same value for all 3 divisions then you have a geometric sequence

Answer 10

i did

Answer 11

what was the value?

Answer 12

it should be 1/3 right?

Answer 13

yes

Answer 14

ok so now the next 3 terms are
3 * 1/3 = 1
1* 1/3 = 1/3
and
1/3 * 1/3 = 1/9

do you follow that?

Answer 15

yes

Answer 16

so thats option c

sorry but i must go