what is the common difference of the given sequence 9, 1, -7, -15, -23
A - 5
B - 1
C - -8
D - -9
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what is the common difference of the given sequence 9, 1, -7, -15, -23
A - 5
B - 1
C - -8
D - -9
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D= a2-a1
= 1-9
= -8
Answer:
d=-8
Step-by-step explanation:
an=a1+(n-1)d
-23=9+(5-1)d
-23=9+(4)d
-23-9=4d
-32=4d
-32/4=4d/4
d=-8