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Ksju [112]
3 years ago
6

What is the common difference in the sequence below? 9, 2, -5, -12, ......

Mathematics
2 answers:
vfiekz [6]3 years ago
4 0

Answer:

<em>-</em><em>7</em>

Step-by-step explanation:

<em>a=9 a2=2 a3=-5 a4=-12 </em>

<em>d = a4-a3 ,a3-a2, a2-a.</em>

<em>so</em><em>: </em>

<em>d = -12-(-5) =-12+5 =-7</em>

<em>also;</em>

<em>d = -5-2 = -7</em>

<em>and </em>

<em>d</em><em>= 2-9 =-7</em>

<em> so the common difference is -7</em>

zimovet [89]3 years ago
3 0

Answer:

-7

Step-by-step explanation:

We know that

Common difference = a2 - a1

=> 9 - 2

=> -7

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