3 years ago

What is the missing term of the arithmetic sequence? 6, ______, 30

Mathematics

1 answer:

Andrei [34K]3 years ago

3 0

Let k = the constant amount added to the sequence since this is an arithmetic sequence

x = missing number

You have to formulate an equation based on the sequence:

6 + k = x or k = x – 6

x + k = 30

Substitute the value of k to the second formula:

x + x – 6 = 30

2x = 36

x = 18

Therefore, the missing number is 18.

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