Question

What is the common difference for this arithmetic sequence? 54, 50, 46, 42, 38, A. 34 B. 4 C. 54 D. -4

Answer 1

If we will analyze, we will notice a standard:

• From 54 to 50 we subtracted 4 --> (-4);
• From 50 to 46 we subtracted 4 --> (-4);

This is repeated until last term of sequence.

Terefore, the correct alternative is letter d).

Answer 2

-4

Explanation:

Take the second term and subtract the first term

50 -54 = -4

We can check by taking the third term and subtracting the second term

46-50 = -4

The common difference is -4