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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
 11 months ago
 11 months 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
 11 months ago
 11 months ago

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bahrom7893Best ResponseYou've already chosen the best response.1
look a1 = 5 n=1 a2=20 n=2, etc..
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
It 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
 11 months ago

bahrom7893Best ResponseYou've already chosen the best response.1
This way you can eliminate A because term 2 doesn't match up... And I think Jhanny's right
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
thanks you that was heard
 11 months ago

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

TabbiejackBest ResponseYou've already chosen the best response.0
Can you help me with another
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
What is the simplified form of the expression?dw:1369539526178:dw
 11 months ago

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

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

TabbiejackBest ResponseYou've already chosen the best response.0
dw:1369539985575:dw
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
That is the choices
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
hmm...something seems wrong here.
 11 months ago

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

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

TabbiejackBest ResponseYou've already chosen the best response.0
I have no Idea what the answer is
 11 months ago

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

TabbiejackBest ResponseYou've already chosen the best response.0
I am the parent of 2 children that is failing
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
this looks like greek to me..
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
ok, what is.... 32?
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
good :) so 3332 works the same way, it is also 1.
 11 months ago

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

TabbiejackBest ResponseYou've already chosen the best response.0
I thank you so much
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
algebra has always been my worst subject
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
It'll get better with practice :) Practice makes people perfect in math ^_^
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
I remember hearing that when I was young
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
I have another quesiton if you are up to it?
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
Of 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.
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
I 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
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
What is the simplified form of the expression?dw:1369541274406:dw
 11 months ago

JhannybeanBest 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 \(\large (3x ^{7/2})^{6}\)
 11 months ago

TabbiejackBest ResponseYou've already chosen the best response.0
ok what do we do next
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
we're going to multiply 6 to the 3 AND the x^(7/2)
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
Are you able to do that?
 11 months ago

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

TabbiejackBest ResponseYou've already chosen the best response.0
A. 729x33 B. 3x33 C. 729x29 D. 3x29
 11 months ago

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

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

JhannybeanBest ResponseYou've already chosen the best response.2
And adding 21 + 12 for the exponent, you'll get your answer. i've done the rest
 11 months ago

JhannybeanBest ResponseYou've already chosen the best response.2
Good luck with your other problems!
 11 months ago
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