S12=192000,d=2000 find a
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Answer:
a = 5000
Step-by-step explanation:
S12=192000,d=2000 find a
Sn = n/2(2a+(n-1)d))
S12 = 12/2(2a+(12-1)2000
192000 =6(2a+22000)
192000/6 = 2a +22000
32000 = 2a + 22000
32000-22000 = 2a
10000/2 = a
a = 5000
Step-by-step explanation:
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