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GrogVix [38]
3 years ago
15

Help please!

Mathematics
2 answers:
givi [52]3 years ago
6 0
4 is the answer :) I hope you
liq [111]3 years ago
6 0
4. Mean is the answer
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Help me :,)
IrinaK [193]

Answer:

The rule of the arithmetic sequence is 13 - 2n

The 30th term is -47

Step-by-step explanation:

∵ f(n) = 11 and g(n) = -2(n - 1) = -2n + 2

∴ f(n) + g(n) = 11 + -2n + 2 = 13 - 2n

Use n = 1 , 2 , 3 , 4 to check the type of the sequence

∵ n = 1 ⇒ 13 - 2(1) = 11

∵ n = 2 ⇒ 13 - 2(2) = 13 - 4 = 9

∵ n = 3 ⇒ 13 - 2(3) = 13 - 6 = 7

∵ n = 4 ⇒ 13 - 2(4) = 13 - 8 = 5

∵ 11 , 9 , 7 , 5 is an arithmetic sequence with difference -2

∴ The rule of the arithmetic sequence is 13 - 2n

∴ The 30th term = 13 - 2(30) = -47

5 0
3 years ago
Read 2 more answers
If 5 boys write 5 pages in 5 minutes,<br><br>in how many minutes can one boy<br><br>write one page?​
Butoxors [25]

Answer:

A boy can write one page in one minute

4 0
2 years ago
Read 2 more answers
What is greater 8 hours 520 minutes
laiz [17]
520 minutes is greater because 8 hours is 480 minutes
6 0
3 years ago
Read 2 more answers
Factor the expression completely by first taking out a common factor<br> 3x^2 + 27x +24
Mrac [35]
The answer to this is
3(x+1)(x+8)

4 0
2 years ago
The lifespan, in years, of a certain computer is exponentially distributed. The probability that its lifespan exceeds four years
kompoz [17]

Answer:

The correct answer is "0.300993e^{-0.300993x}".

Step-by-step explanation:

According to the question,

⇒ P(x>4)=0.3

We know that,

⇒ P(X > x) = e^{(-\lambda\times x)}

⇒     e^{(-\lambda\times 4)} = 0.3

∵ \lambda = 0.300993

Now,

⇒ f(x) = \lambda e^{-\lambda x}

By putting the value, we get

           =0.300993e^{-0.300993x}

3 0
2 years ago
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