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Sum of n terms of an ap is 5n 2-3n

Web22 Mar 2024 · Ex 9.2,13 If the sum of n terms of an A.P. is 3n2 + 5n and its mth term is 164, find the value of m. Let a1, a2, … an be the given A.P Given, Sum of n terms = 3n2 + 5n Sn = 3n2 + 5n Putting n = 1 in (1) S1 = 3 × 12 + 5 × 1 = 3 × 1 + 5 × 1 = 3 + 5 = 8 Sum of first 1 terms = First term ∴ First term = a1 = S1 = 8 Sn = 3n2 + 5n … WebComputation is done every year to know the interest earned. The first interest is added to the deposit. This sum also earns interest for the next period.12. At the start of an experiment, there are 2000 bacteria in a colony. In 2 hours, the population has tripled. Assume that the growth law N = N0ekt applies. Determine ek13.

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WebThe sum of n terms of an AP can be found using one of the following formulas: S n = n/2 (2a+ (n−1)d) S n = n/2 (a 1 +a n) Here, a = a 1 = the first term, d = the common difference, n = number of terms, a n = n th term, S n = the sum of the first n terms. What is the Commonly Used Sum of AP Formula? WebThe sum of the first n terms of an AP is (5n 2 /2 +3n/2). Find its nth term and the 20th term of this AP. arithmetic progression class-10 1 Answer +2 votes answered Sep 14, 2024 by … customer whiteboard https://onedegreeinternational.com

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WebQ8. If the ratio of sum of the first m and n terms of an AP is m2 : n2, show that the ratio of its mth and nth terms is (2m – 1) : (2n – 1). Q9. If m times mth term of an AP is equal to n times nth term, find the (m + n)th term of the AP. Q10. The sum of the first 7 terms of an AP is 63 and the sum of its next 7 terms is 161. Web7 Apr 2024 · Hence, the sum of the first 15 terms of given A.P. is 525. (ii) b n = 5 + 2n Solution: Given A.P. has nth term, a n = 5 + 2n and number of terms (n) = 15 So, a n = 5 + 2 (15) = 35 On putting n = 1, we get a, first term of the A.P., a = 5 + 2 (1) = 7 S 15 = n [a + a n ]/2 = 15 (7 + 35)/2 = 15 x 21 = 315 Web27 Dec 2012 · Sum of first n terms of AP, S n = 2n 2 + 5n Now choose n =1 and put in the above formula, First term = 2+5 = 7 . Now put n=2 to get the sum of first two terms = 2x4 + 5x 2= 8 + 10 = 18 . This means . first term + second term = 18 . but first term =7 as calculated above . so, second term = 18-7 = 11 . chatgpt australian government

In an A.P if sum of its first n terms is 3n^2 + 5n and its k^th term is

Category:The sum of n terms of an AP is 5 n∧ 2 3 n . find the AP hence find its

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Sum of n terms of an ap is 5n 2-3n

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WebQuestion: If the sum of $n$ terms of an A.P. is $2 n^{2}+5 n$, then its $n$th term is (a) 4n 3(b) 3n 4(c) 4n+ 3(d) 3n+ 4 Solution: Here, the sum of firstnterms is ...

Sum of n terms of an ap is 5n 2-3n

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Web79.the sum of n terms of an ap is[ 5n 2 2 + 3n 2 ]. find the 20th term. 79.the sum of n terms of an ap is[ 5n 2 2 + 3n 2 ]. find the 20th term. can help students to understand the material and improve their grades. Download full answer; Expert tutors will give you an answer in real-time; Find the right method ... WebAlgebra. Factor 3n^2+5n+2. 3n2 + 5n + 2 3 n 2 + 5 n + 2. For a polynomial of the form ax2 +bx+ c a x 2 + b x + c, rewrite the middle term as a sum of two terms whose product is a⋅c = 3⋅2 = 6 a ⋅ c = 3 ⋅ 2 = 6 and whose sum is b = 5 b = 5. Tap for more steps... 3n2 + 2n+3n+2 3 n 2 + 2 n + 3 n + 2. Factor out the greatest common factor ...

WebGet Free NCERT Solutions for Class 11 Maths Chapter 9 Sequences and Series. Class 11 Maths Sequences and Order NCERT Solutions be extremely helpful while what your homework or while make for the exams. Sequences and Series Chapter 9 Class 11 Maths NCERT Solutions were prepared according to CBSE marking scheme and guidelines. WebIf Sn , the sum of first n terms of an A.P., is given by Sn = 5n^2 + 3n , then find its n^th term. Question If S n, the sum of first n terms of an A.P., is given by S n=5n 2+3n, then find its n …

WebIf (s)n, the sum of first n terms of an A.P., is given by sn=5n2+3n, then find its nth term... Web16 Oct 2024 · If the sum of n terms of an A.P. is 2n^2 + 5n , then its nth term is A. 4n − 3 B. 3n − 4 C. 4n + 3 D. 3n + 4 asked Jul 16, 2024 in Arithmetic Progression by Maanas ( 26.0k points) arithmetic progression

WebThe sum of n terms of an A.P. is 5n² + 2n. What is its 19th term? 1st term is (sum of 1st term is is itself) =5+2=7 2nd term (sum of first 2 terms) =5 (4)+2 (2)=24 But 2nd term is a2-a1 = 24-7 =17. a1=7 ; a2=17. So d=10 a19 = a1+ (n-1)d a19= 7+18 (10) So, a19 is 187. Hope it's clear!! József Yoyó Inczefi

WebPh-1,2,3 & Binomial(F) - Free download as PDF File (.pdf), Text File (.txt) or read online for free. (n – 2)2 = n (n – 1) – 4n + 10 n2 – 4n + 4 = n2 – 5n + 10 n = 6 Ans ] Q.138107/bin The sum of the series aC0 + (a + b)C1 + (a + 2b)C2 + + (a + nb)Cn is where Cr's denotes combinatorial coefficient in the expansion of (1 + x)n, n N (A) (a + 2nb)2n (B) (2a + nb)2n … customer white boardsWebAbstract. This project deals with the detailed study and design procedure of pressure vessel. It concerns. on the study of various parts of pressure vessels like shell, heads, support, nozzles etc. The analysis models utilized realistic geometry, including supports, vessel heads and actual. boundary conditions. chat gpt auth loginWeb16 Oct 2024 · If the sum of n terms of an A.P. is 3n2 + 5n and its mth term is 164, find the value of m. arithmetic progression class-10 1 Answer +1 vote answered Oct 16, 2024 by Ishti (46.5k points) selected Oct 31, 2024 by Anika01 Best answer Sn = 3n2 + 5n Taking n = 1, we get S1 = 3 (1)2 + 5 (1) ⇒ S1 = 3 + 5 ⇒ S1 = 8 ⇒ a1 = 8 Taking n = 2, we get customer wholesaleWebThe sums of n terms of two AP's are in the ratio ` (3n-13): (5n+21).` Find the ratio of their 24th terms. Show more The sum of n, 2n, 3n terms of an A.P. are `S_1, S_2, S_3`... chatgpt authentication failedWebEvaluate the following Sum, using standard summation formulas. (n) E (5i^2+4i) I=1. Hint: Your answer should be a function of 𝑛. This list of summation rules may be helpful. chat gpt authWebAnswer (1 of 5): S_n = 5n^2 - 3n S_{n-1} = 5(n-1)^2 - 3(n-1) t_n = S_n - S_{n-1} =[ 5n^2 - 3n] - [ 5(n-1)^2 - 3(n-1) ] = 5 [ n^2 - (n^2 - 2n + 1) ] - 3[ n - n + 1 ... chatgpt authorizationWebTo convert from S n to T n we can write T n = S n − S n − 1 Shortcut Method: If S n is quadratic in n then:Replace n 2 by (2 n − 1) and n by 1. Using Shortcut method: T n = 3 (2 … customer with a incidents outage