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solmaris [256]
3 years ago
15

Eleven more than two

Mathematics
1 answer:
Veronika [31]3 years ago
6 0

Answer:13

Step-by-step explanation:

11+2=13

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*URGENT ALGEBRA 2* Anyone know these answers? Will award brainliest.
stiv31 [10]
Correct Answer:
Second option

Solution:
The given sequence is:

2.2, 6.6, 11, ...

If we observe the sequence it is an Arithmetic Sequence as the difference between two consecutive terms is the same.

6.6 - 2.2 = 4.4 
11 - 6.6 = 4.4

First we find the general term for this sequence. 

a(n)= a_{1}+(n-1)d

a_{1}=first term = 2.2
d = 4.4

So,

a(n) = 2.2 +(n-1)*4.4 \\  \\ 
a(n) = 2.2 + 4.4n - 4.4 \\  \\ 
a(n) = 4.4n - 2.2

This general term will be placed inside the summation sign with limits from 1 to 5 to give the sum of first 5 terms of the given sequence. So the correct answer is Second Option
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Answer:

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Step-by-step explanation:

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Reika [66]
165 is answer we also use a formula
5 ( n/2(2a + ( n-1)d)
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Step-by-step explanation:

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