Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Find the common difference of an AP formed by inserting 5 arithmetic means between two numbers which are roots of the equation: x squared minus 18 x plus 45=0?
Asked by Topperlearning User | 05 Oct, 2016, 05:56: AM
answered-by-expert Expert Answer

x squared minus 18 x plus 45 equals 0 x squared minus 3 x minus 15 x plus 45 equals 0 left parenthesis x minus 3 right parenthesis left parenthesis x minus 15 right parenthesis equals 0 s o space t h e space r o o t s space a r e space 3 space a n d space 15. A c c o r d i n g space t o space t h e space q u e s t i o n space 5 space A M space a r e space t o space b e space i n s e r t e d space b e t w e e n space 3 space a n d space 15 s o space n equals 5 C o m m o n space d i f f e r e n c e space i s space g i v e n space b y space fraction numerator 15 minus 3 over denominator n plus 1 end fraction equals 12 over 6 equals 2

Answered by | 05 Oct, 2016, 07:56: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Maths
please answer
question image
Asked by pvsdeepak20056 | 25 Jun, 2020, 06:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
1. Sum of 10 A.M's between 3,10 is..? 2.if (4x+4)/3, 2x+2,3x+3 are in G.P then 4th Term is.. 3.which term of 2-1/root2 +1/4 so on .. is 1/32. 4.sum to n terms of 3.5+4.7+5.9+ so on..
Asked by sridhark91 | 21 Apr, 2019, 11:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
9th sum
question image
Asked by lovemaan5500 | 15 Jun, 2018, 07:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Define arithmetic mean for an A.P. a, b, c.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If A1, A2, A3, …, An are n arithmetic means between a and b. Find the common difference between the terms.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Find the arithmetic mean between .
Asked by Topperlearning User | 22 Nov, 2017, 10:01: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Find the number of arithmetic means between 7 and 71 in such a way that 5th mean is 27.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Insert 6 numbers between – 6 and 29 such that the resulting sequence is an A.P.
Asked by Topperlearning User | 22 Nov, 2017, 10:04: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Between 1 and 31, n numbers have been inserted in such a way that the resulting sequence is an A. P. and the ratio of 7th and (n – 1)th numbers is 5 : 9. Find the value of n.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
If x, y, z are in A.P. A1 is the mean of x & y and A2 is the mean of y & z. Then prove that the mean of A1 and A2 is y.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×