Mathematics
14 Online
OpenStudy (anonymous):
Identify the sequence as arithmetic, geometric, or neither. Explain your answer.
1.6, 0.8, 0.4, 0.2, . . .
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OpenStudy (anonymous):
idk what do u think?
OpenStudy (anonymous):
arithmetic?
OpenStudy (anonymous):
huh..onestly idk it either
OpenStudy (anonymous):
okay then.....
OpenStudy (anonymous):
hope u get the answer anyways
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OpenStudy (anonymous):
@mmmmmmmmmm123 ?!?!
myininaya (myininaya):
is 1.6-0.8 the same as 0.8-0.4
myininaya (myininaya):
are both of those differences the same?
OpenStudy (anonymous):
no?
OpenStudy (anonymous):
yes
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myininaya (myininaya):
so this is definitely not a arithmetic sequence since there is no common difference amomgst the consecutive numbers in your set
myininaya (myininaya):
now let's look at ratios
myininaya (myininaya):
is 1.6/0.8 the same as 0.8/0.4?
OpenStudy (anonymous):
no?
myininaya (myininaya):
?
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myininaya (myininaya):
16/8 isn't the same as 8/4?
OpenStudy (anonymous):
yess sorry it is
myininaya (myininaya):
and 16/8=8/4=4/2
all of these ratios equal 2
myininaya (myininaya):
so you have a common ratio
myininaya (myininaya):
which means you have what kinda sequence?
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OpenStudy (anonymous):
geometric
myininaya (myininaya):
common difference goes with arithmetic
common ratio goes with geometric
yes you have a geometric sequence
OpenStudy (anonymous):
okayyy thanks!!!!
myininaya (myininaya):
np