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mash [69]
3 years ago
14

Determine whether the following sequence is arithmetic, geometric, or neither.

Mathematics
2 answers:
Igoryamba3 years ago
6 0

Answer: neither

Step-by-step explanation:

Consider sequence a_1 , a_2 , a_3 , .....a_n, where n acn be any natural number.

This sequence is said to be Arithmetic sequence if the difference between two consecutive terms is equal.

i.e, if it is arithmetic then d=a_2-a_1=a_3-a_2=...=a_n-a_{n-1}

This sequence is said to be Geometric sequence if the common ratio between two consecutive terms is equal.

r=\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=......=\dfrac{a_n}{a_{n-1}}}

The given sequence =  1, 2, 2, 3, ...

Here , 2-1\neq2-2 , so difference between two consecutive terms is not equal.

⇒ Its not an Arithmetic sequence.

Also , \dfrac{2}{1}\neq\dfrac{2}{2}\neq\dfrac{3}{2}, so ratio between two consecutive terms is also not equal.

⇒ Its not an Geometric sequence.

Hence, the given sequence is neither arithmetic nor geometric.

miv72 [106K]3 years ago
5 0
The following sequence shown up top is arithmetic sequence
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Answer:

Carl traveled 281.25 km by bus and 1,618.75 km by plane.

Step-by-step explanation: v1 = 60 km/h average speed by bus to Toronto

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t = 7 h total traveling time

t1 = the time of the travel by bug

t2 = the time of the travel by plane

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Since average speed = distance/time we have time = distance/avg.speed

t1 = d1/v1 that is t1 = d1/60

t2 = d2/v2 that is t2 = d2/700

Plug the above values into t1 + t2 = t.

We have the following system of equations:

d1/60 + d2/700 = 7

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