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ddd [48]
3 years ago
9

Write the recursive rule and an explicit rule for the geometric sequence 9,27,81,243

Mathematics
1 answer:
SashulF [63]3 years ago
5 0

Answer:

Recursive

a(1) = 9 ; a(n+1) = 3 * a(n)

Explicit

a(n) = 9 * 3^(n-1)


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Tanaysha was trying to solve 72-8. She said that she could do 72+2=74 and 74-10 to solve. What strategy did she use?
Ostrovityanka [42]

Answer:

Tanaysha replace 8 by ( 10 -2) to solve the given expression.

Step-by-step explanation:

Here, the given expression to be solved  is:

72  -   8   ..........  (1)

Now, as we know: 8 = 10 - 2

Replacing the value of 8 with ( 10 - 2), we get:

72  -   8

= 72  -   (10 - 2)

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= 74 - 10

Subtracting 10 from 74, we get:

= 64

So, Tanaysha replace 8 by ( 10 -2) to solve the given expression.

4 0
4 years ago
A diver is at 20,m below sea level write his depth as a directed number<br><br>​
Juliette [100K]

Answer:

-20

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7 0
3 years ago
What are the possible numbers of positive, negative, and complex zeros of f(x) = x6 − x5 − x4 + 4x3 − 12x2 + 12?
FrozenT [24]
Using <span>Descartes' rule of signs.
There are 4 changes of signs of coefficients:
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Read 2 more answers
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elixir [45]

Answer:

x=-8

Step-by-step explanation:

8=16+x

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-x=8

x=-8

8 0
3 years ago
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