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Algebra 20 Online
OpenStudy (anonymous):

how to solve this problem

OpenStudy (abb0t):

Which problem?

HanAkoSolo (jamierox4ev3r):

blank multiplied by the quantity of blank=nothing... O.O

HanAkoSolo (jamierox4ev3r):

lol @abb0t XD

OpenStudy (anonymous):

\[V= 4/3 \pi r3\]

HanAkoSolo (jamierox4ev3r):

this is just the volume formula.. what do you want to solve for?

OpenStudy (anonymous):

respect, please @abb0t

HanAkoSolo (jamierox4ev3r):

oohh ouch :/ so what do you want me to do with this @rosa12 ?

OpenStudy (anonymous):

question number 16

OpenStudy (abb0t):

http://www.youtube.com/watch?v=e2QKlmMT8II

HanAkoSolo (jamierox4ev3r):

well what are the two variables in this (hint they are r and h, but I need you to name them for me)

HanAkoSolo (jamierox4ev3r):

@rosa12

OpenStudy (anonymous):

yes

HanAkoSolo (jamierox4ev3r):

so what are they then? r is _____ and h is ______ . THink of how they affect each other

OpenStudy (anonymous):

I think so.

HanAkoSolo (jamierox4ev3r):

r=radius and h=height.... what happens to the height as radius increases?

OpenStudy (anonymous):

I don't know.

OpenStudy (anonymous):

where is height (h) in question 16?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

question 14 and 16

OpenStudy (anonymous):

@Rosa12, look at the wording of question 16: Volume as a function of radius, means we may obtain the volume whatever the radius is. Give any value to radius and you get the volume. Seems like radius is independent (can take any positive value) and volume is dependent (on the radius)

OpenStudy (anonymous):

does it make sense?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

for number 14

OpenStudy (anonymous):

What is it asking? I just see a series of points

OpenStudy (anonymous):

each set of ordered pairs represents a function. write a rule that represents the function. (1, 2/3), (2, 4/9), (3, 8/27), (4, 16/81), (5, 32/243)

OpenStudy (anonymous):

points can be calculated as:\[P_n=(x_n,y_n)=\left( n,\left( \frac{ 2 }{ 3 } \right)^n \right)\]or if you want to get the function: \[y=\left( \frac{ 2 }{ 3 } \right)^x\]

OpenStudy (anonymous):

not

OpenStudy (anonymous):

when x=1, y=2/3 when x=2, y=4/9=(2/3)^2 when x=3, y=8/27=(2/3)^3 when x=4, y=16/81=(2/3)^4 when x=5, y=32/243=(2/3)^5 Don´t you see that in order to calculate y for a certain x we just do y=(2/3)^x ?

OpenStudy (anonymous):

okay thanks think you can help in other two questions

OpenStudy (anonymous):

shoot! but open new post!

OpenStudy (anonymous):

and close this one if solved, please

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