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ki77a [65]
3 years ago
8

Please help me with this problem.

Mathematics
1 answer:
Monica [59]3 years ago
3 0

Answer:

  3

Step-by-step explanation:

You know that ...

  1000 = 10³

when you take the logarithm to base 10, you get

  log₁₀(1000) = 3

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7(8+x+2) equals what exactly i dont know ​
Nataly [62]

Answer:

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Step-by-step explanation:

7(8+x+2)

Combine like terms in the parenthesis

7(8+2+x)

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Distribute

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Vika [28.1K]

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Step-by-step explanation:

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The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).
lesantik [10]

Answer:

(a).

S_{n} =  \frac{n}{2} (4n + 20) \\  \\S _{n - 1} =  \frac{(n - 1)}{2} (4n - 4 + 20) \\  \\ S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16) \\  \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2}  \\   \\  { \boxed{S _{n - 1} =  {2 {n}^{2} + 6n - 8}}} \\

(b).

from general equation:

S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16)

first term is 4n

common difference:

16 =  \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d =  \frac{16}{n - 2}

8 0
3 years ago
Round 27506 to the nearest 1000
lana [24]

Answer:

30000

Step-by-step explanation:

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you need then one behide it to its a 5 so it goes up

3 0
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