Fill in the blanks. The next two numbers in the pattern: 1, 8, 27, 64, 125, ___, ____. The cube of an odd number is always ______. The cube of a negative integer is _______. The last digit of a number which has 3 as last digit in its cube is ______.
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Answered by
1
Answer:
We can also formulate this
This is called a geometric sequence, where the next term can be obtained by multiplying the prior term by a paricular number, called a common ration...
So if
a
is our first term, and
r
is our common ration, then our sequence would look like...
a
,
a
r
,
a
r
2
,
a
r
3
...
.
This has an
n
t
h
term of:
a
⋅
r
n
−
1
where the first term is at
n
=
1
Your sequance is:
−
5
,
−
10
,
−
20
,
−
40
...
So
a
=
−
5
and
r
=
2
n
t
h
term =
(
−
5
)
⋅
2
n
−
1
So our next terms our
n
=
5
and then
n
=
6
So hecne using the formula: -80, -160 are the next two terms
We can also take a sum of the first
n
terms, but thats a different story...!
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Answered by
0
Answer:
dhb bjdcjkj. jhfdvjjb. dryookvv bkkgg gikfr jgfvv bvdddfthik. gfsyi hkkgf. hgh. vbvvf cghh gghb fhbn. fg
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