Question

I attach file need help,TY

Answer 1

I need help ,Please!

Answer 2

This is the same question Natala Asked

Answer 3

not that

Answer 4

how you solve n

Answer 5

Natala was also confused at it !



do u know the power rule ?

Answer 6

if i say r^n = (r^n-1)(r) would i be wrong tell me?

Answer 7

I don't need formula , I need to know how you solve find n

Answer 8

and also tell me wt is the last term of gp

Answer 9

yes but n=?

Answer 10

I need to find n

Answer 11

just tell me last term representation of last term in gp .... i'l show u how it works trust me

Answer 12

if there n terms in gp then


gp is


a,ar,....ar^n-1


here ar^n-1 is the last term ....

Answer 13

From her:
s = a - a r * r^n-1
---------
-2
u substitution n=?

Answer 14

i told u wts an in the question
\[a _{n}\]?

Answer 15

it is the last term

Answer 16

\[a _{n}=ar ^{n-1}\]

Answer 17

\[33=\frac{a _{1}(1-(-2))^{n-1}}{-2}\]from here how I find n

Answer 18

lets take the numerator only


a(1- (-2)^n)


this is how it is


now


a - a (-2)^n-1 (-2)
^
this the last term

Answer 19

last term in ur first question = 48

Answer 20

go thru the attachment again ...

Answer 21

salina i'm sorry i've to go somewhere.... but i'm telling u go thru the attch. again u'l find the answer



use this r^n = r^n-1(r)

Answer 22

thank you Taina can you do me number 19

Answer 23

Do it the same way as Tatiana just showed you for the other.