दिलेल्या अंकगणिती श्रेढीचे t10=20,t19=18 तर d=
Answers
Answered by
1
Answer:
bahini tuze uttar khalil parakare aahe
tyala brainliest tharav
ganitat especially bhumitit kinva sankhyiki mdhe kahi doubt asel mala vichaar
Step-by-step explanation:
so here for the given ap
t10=20 t19=18
so now using tn=a+(n-1)d
put n=10 first
so we get
t10=a+(10-1)d
ie a+9d=20 (1)
again applying same formula by putting n=19
we get
t19=a+(19-1)d
ie a+18d=18 (2)
so subtracting (1) from (2)
we get
9d=-2
ie d=-2/9
thus value of d is -2/9
Answered by
1
Answer:
Step-by-step explanation:
t 10 =20, t 19 = 18
t10 = a+9d
a+9d=20...i
t19=18
a+18d=18...ii
Difference between EQ(I)and(ii)
a+9d-a-18d=20-18
-9d=2
d= -2/9
Similar questions
English,
4 hours ago
Computer Science,
4 hours ago
Math,
7 hours ago
Math,
7 hours ago
Chemistry,
7 months ago
Social Sciences,
7 months ago