Question

Algebra 2, sequences and series problems... Need help on 4 problems for my practice test please...

Answer 1

@sleepyjess , any help?

Answer 2

r=Gn+1/Gn=-1/8

Answer 3

Therefore choice c will be the answer!!!

Answer 4

thank you so much... @neba.zi

Answer 5

Never mind!!!

Answer 6

It's not C? How did you get that answer?

Answer 7

@maddrea_ try posting only one question at a time.

Answer 8

sorry /: just really needed the help on these... @Hero

Answer 9

The answer to the first question is c...to verify multiply the common ratio to the first um and u get the second num...multiply common ratio to the second number and you get the third and so on

Answer 10

For the second question...ans is simply A...rule of summation

Answer 11

For third question...answer is D....again the simple rule of summation

Answer 12

128 * ratio = -16
ratio = ?

Answer 13

The common ratio is (-1/8)
128*(-1/8)= 16

Answer 14

okay thank you... Now how do you do the spreadsheet for the 4th one, I have no clue

Answer 15

okay so its like code
A1 is what is in the Cell A1

Answer 16

left most one is just your n=1 to 5
the middle is what each term is
and the right most is how we are going to add all this up to get the total sum

Answer 17

look at option C and try to really see what is going on with every step

Answer 18

like what is stores in C1 cell, what is stored in B1 cell, what is stores in A1 cell and so on

Answer 19

M guessing the answer is C...of u look carefully...u see....I'm the formula...a in B row...represents the equation for different values of A...!
In the C row...the answer corresponding to the value and the previous value are added to get the partial C
But I m not sure

Answer 20

@tanmaykhandait you cant be just giving out anwers like that, u gotta let them try and learn

Answer 21

Sorry bro

Answer 22

ok :)

Answer 23

it doesnt bother me

Answer 24

do you know how to graph Geometric sequences too? I don't know how to do this problem

Answer 25

I can try...but m not sure if I can do it

Answer 26

you can graph point by point and join them

Answer 27

this is not a continuous function so, im not sure u can write an equation like f(x) for all x

Answer 28

unless that is what your teacher wants like write a function where these points are solutions on some contiuos function

Answer 29

I don't understand how to do it with fractions

Answer 30

in which case it would be y=Initial number*r^x

Answer 31

first find the r, which is the geometric esequence

Answer 32

How do I find r with the fractions tho?

Answer 33

same thing so take the first number 1/32 * r = 1/8

Answer 34

lets solve for r

Answer 35

r/32= 1/8
r=32*1/8 = 4

Answer 36

so what should your equation be given r now

Answer 37

I keep the values on on x axis and keep the obtained value on x axis....
If u look...the common ratio is 4 and therefore the equation comes out to be y=4x...
For example ...if u keep x =(1/32) you get the next term and so on

Answer 38

Wait, can you explain it again, I'm still a little confused... sorry :( I need to see it written out

Answer 39

F(x)= r *x
R is the common ratio and x are the values which are given and plotted on x axis
Solving this y get f(x) which is the values plotted on y axis