Arithmetic sequences
Types of exercises: middle term of an arithmetic sequence, term of an arithmetic sequence, common difference of an arithmetic sequence, sum of an arithmetic sequence, is the sequence arithmetic, three terms of an arithmetic sequence with an unknown, arithmetic sequences in word problems.
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Is the sequence (aₙ) arithmetic?
aₙ = (3/2)n + 3
Complete the arithmetic sequence
17, ☐, 11
Give the amount
Tom is saving up for a bike. In the first month he will put aside 30 zł, and in each next month 5 zł more than in the previous one. How many zlotys will he put aside in month 8?
The numbers below are, in this order, three consecutive terms of an arithmetic sequence. Find x
2x + 8, x + 11, −2x − 4
Give the common difference of the arithmetic sequence
a₄ = 7, a₁₁ = 28
Compute the indicated term of the arithmetic sequence
a₁ = 5, r = 1, a₃₈ = ?
Compute the sum of the first terms of the arithmetic sequence
a₁ = −2, r = −8, S₁₀ = ?
Is the sequence (aₙ) arithmetic?
aₙ = −n² + 4n + 5
Complete the arithmetic sequence
10, ☐, −18
Give the amount
Tom is saving up for a bike. In the first month he will put aside 20 zł, and in each next month 10 zł more than in the previous one. How many zlotys will he put aside in total during the first 7 months?
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