If 18,a,b,-3 are in Arithmetic Progression then find the value of (a+b). Answer only if you know plss do not answer that you don't know the answer.
If 18,a,b,-3 are in Arithmetic Progression then find the value of (a+b). Answer only if you know plss do not answer that you don't know the answer.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Step-by-step explanation:
Let a and d be any constants such that:
(a-3d), (a-d), (a+d), (a+3d) are in A.P.
∴a−3d=18 .....(1)
∴a−d=A .....(2)
∴a+d=B .....(3)
∴a+3d=−3 .....(4)
From eq(1) and eq(4):
a=
2
15
& d=−
2
7
∴A=a−d=11
∴B=a+d=4 (Ans → C)
Please mark me as brainliest
Answer:
option C
Step-by-step explanation:
please mark me as brainliest and