Which of the following is an arithmetic sequence? * - 20, - 25, - 30, - 35, - 45, ... * - 15.6, - 12.9, - 10.2, - 7.5, - 4.8, ... * 3.1, 6.2, 12.4, 24.8, 49.6, ... * 7.2, 3.6, 1.8, 0.9, 0.45, ...

Question

Mariam Gregory

Mathematics

5 August, 03:16

Which of the following is an arithmetic sequence? * - 20, - 25, - 30, - 35, - 45, ... * - 15.6, - 12.9, - 10.2, - 7.5, - 4.8, ... * 3.1, 6.2, 12.4, 24.8, 49.6, ... * 7.2, 3.6, 1.8, 0.9, 0.45, ...

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Answers (1)

Know the Answer?

Josephine Humphrey · Answer 1

-20; - 25; - 30; - 35; - 45; ...

-25 - (-20) = - 5

-30 - (-25) = - 5

-35 - (-30) = - 5

-45 - (-35) = - 10! NOT

-15.6; - 12.9; - 10.2; - 7.5; - 4.8, ...

-12.9 - (-15.6) = 2.7

-10.2 - (-12.9) = 2.7

-7.5 - (-10.2) = 2.7

-4.8 - (-7.5) = 2.7 YES

3.1; 6.2; 12.4; 24.8; 49.6; ...

6.2 - 3.1 = 3.1

12.4 - 6.2 = 6.2! NOT