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mash [69]
2 years ago
14

Look for a pattern and complete the conjecture.

Mathematics
2 answers:
denis-greek [22]2 years ago
4 0

Answer:

390

Step-by-step explanation:

The formula of sum of arithmetic sequence is \frac{n}{2} (a+Tn)

The number of this series are 2, 4, 6, 8, 10, 12, .  .  .  .  , 60.

The first term ( a ) = 2

The 30th even number is 60

The Tn is the term of the sequence

So the equation is

30/2 x ( 2 + T_{30})

T_{30} = 60

30/2 x ( 2 + 60 )

30/2 x (62)

1860/2

390

ale4655 [162]2 years ago
4 0
390 is the answer to the problem
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