Home
Cbts
Interviews
Classroom
MarketPlace
Find Roomate
Community
2002
Mathematics
JAMB
If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.
A.
2a + 2 = 0
B.
3a + 5d = 0
C.
a + 3d = 0
D.
a + 2d = 0
Correct Answer:
a + 3d = 0
Explanation
T
n
= a + (n−1)d (nth term of an AP). T
9
=5T
5
a + 8d = 5(a+4d) ⟹a + 8d = 5a + 20d 5a − a + 20d − 8d = 0 ⟹ 4a + 12d = 0 a + 3d = 0
T
n
= a + (n−1)d (nth term of an AP). T
9
=5T
5
a + 8d = 5(a+4d) ⟹a + 8d = 5a + 20d 5a − a + 20d − 8d = 0 ⟹ 4a + 12d = 0 a + 3d = 0
Report an Error
Find Roomate
Ask A Question
Sell Your Stuffs
THIS WEEK's
Latest Articles
Top-Scorer Okoro Uchechukwu Solomon Reveals How He Scored 337 in JAMB
by
samuel olalekan adeyemi
Bouncing Back: How Samuel Isaac Overcame Setbacks to Score 265 in JAMB and What He Learned
by
samuel olalekan adeyemi
Managing Stress During Exams: Practical Tips for Students
by
samuel olalekan adeyemi
Unlocking Learning Potential: The Power of Self-Quizzing Techniques for Students
by
dahmmy
©2023 Passpadi. All rights reserved.
Privacy Policy
Terms of Service