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Aliun [14]
3 years ago
14

1. The sum of a number and six less than twice that number is twelve. Write an equation that can be used to

Mathematics
1 answer:
jeka57 [31]3 years ago
3 0

Answer: n + 2n - 6 = 12

Step-by-step explanation:

The number is n.

Six less than twice the number can be expressed as = 2n - 6

Adding those together will be; n + 2n - 6

They add up to 12 so the equation is;

n + 2n - 6 = 12

You said I don't need to solve but the number is 6 just in case.

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Vinvika [58]

Answer:

(a)= option 3

(b)= option 3

Step-by-step explanation:

(A) It is given that a sequence is defined by the recursive function  a_{1}=1 and a_{n}=a_{n-1}+n

Now, substituting the value of n=2 in above equation,

a_{2}=a_{1}+2

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Putting n=4,

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Putting n=7,

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(B) The given sequence is :

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a_{15}=5(-2)^{14}

=5{\times}16384

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Hence, the fifteenth term is 81920.

Option 3 is correct.

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