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 one year ago
Write the explicit formula for the geometric sequence.
a1 = 5 a2 = 20 a3 = 80
A. an = 5 • (4)n
B. an = 5(4)n1
C. an = 4(5)n1
D. an = 5 • (4)n
 one year ago
Write the explicit formula for the geometric sequence. a1 = 5 a2 = 20 a3 = 80 A. an = 5 • (4)n B. an = 5(4)n1 C. an = 4(5)n1 D. an = 5 • (4)n

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bahrom7893
 one year ago
Best ResponseYou've already chosen the best response.1look a1 = 5 n=1 a2=20 n=2, etc..

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2It would be B because in a geometric sequence, you have \[\large ar ^{n1}\] and in finding our r, we take \(\large\frac{ a _{2} }{ a _{1} }\) and that is 4

bahrom7893
 one year ago
Best ResponseYou've already chosen the best response.1This way you can eliminate A because term 2 doesn't match up... And I think Jhanny's right

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0thanks you that was heard

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2So we have a1 = 5, our r = 4 and plug it into our formula \[\large ar ^{n1}\]

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0Can you help me with another

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0What is the simplified form of the expression?dw:1369539526178:dw

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Alright, for this one you have a variable with two different powers dividing eachother, and in this case, we can simply do this. \[\large \frac{ 1 }{ q ^{\color{red}{(33/4)8} }}\]

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2we you know to solve \[\color{fuchsia}{\frac{ 33 }{ 4 }}\color{green}{8}\]

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0dw:1369539985575:dw

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0That is the choices

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2hmm...something seems wrong here.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2\[\frac{ 33 }{ 4 }8*(\frac{ \color{green}{4} }{ \color{green}{4} })= \frac{ 33 }{ 4 }\frac{ \color{darkorchid}{32} }{ \color{darkorchid}{4} }\]

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Ohh I see. hm, well what do you get when you reduce 33/4 32/4? :D

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I have no Idea what the answer is

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2solve (33/4)(32/4) and we'll work from there, you'; get your answer, promise :)

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I am the parent of 2 children that is failing

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0this looks like greek to me..

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2ok, what is.... 32?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2good :) so 3332 works the same way, it is also 1.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2So we now have \[\frac{ 1 }{ q ^{\color{blue}{1/4}} }\]

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I thank you so much

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0algebra has always been my worst subject

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2It'll get better with practice :) Practice makes people perfect in math ^_^

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I remember hearing that when I was young

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I have another quesiton if you are up to it?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Of course :) Math is a lot about understanding a problem as a whole and finding a relation to a technique method in solving, it's all patterns.

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0I have 2 test to give to my children for the summer to help them prepare for summer school that is why I am getting the answers so I will be able to help them

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0What is the simplified form of the expression?dw:1369541274406:dw

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2\[\large (3x ^{\color{forestgreen}{7/2}})^{\color{blue}{6}}(x ^{\color{green}{2}})^{\color{blue}{6}}\] here, we will start 1 part at a time. lets start with \(\large (3x ^{7/2})^{6}\)

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0ok what do we do next

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2we're going to multiply 6 to the 3 AND the x^(7/2)

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Are you able to do that?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Hm.. not exactly, we have \[\large(3^{\color{blue}{6}})(x ^{\color{blue}{(7/2)(6)}})\] which gives us \[\large(729x ^{21})\]

Tabbiejack
 one year ago
Best ResponseYou've already chosen the best response.0A. 729x33 B. 3x33 C. 729x29 D. 3x29

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Now that we've taken care of the first part, we can move onto the second part, which is \[\large (x ^{2})^{6} = x ^{\color{red}{6*2}}= x ^{\color{blue}{12}}\]

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Now we can combine both parts together so we get \[\large (729x {^\color{green}{21}}) *(x ^{\color{green}{12}}) = 729x ^{\color{red}{21+12}}\]

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2And adding 21 + 12 for the exponent, you'll get your answer. i've done the rest

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Good luck with your other problems!
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