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A=23 an= 5 n=10 find d
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A=23 an= 5 n=10 find d

User Reed Morse
by
8.1k points

2 Answers

4 votes

Answer:

d is -2

Explanation:

From arithmetic progression:


{ \bf{a_(n) = a + (n - 1)d }}

substitute:


{ \sf{5 = 23 + (10 - 1)d}} \\ { \sf{5 - 23 = 9d}} \\ { \sf{9d = - 18}} \\ { \sf{d = ( - 18)/(9) }} \\ \\ { \sf{d = - 2}}

User Hambone
by
7.6k points
1 vote

Answer:

d=-2

Explanation:

a10=5, a10=a+(10-1)d

5=23+9d, d=-2

User Sunil Kumar Sahu
by
7.6k points
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