12. The general term of an arithmetic sequence is an = 7- 3n. What is the sum of the first seven terms of the sequence? A. -56 В. -35 С. 4 D. 210 13. How many consecutive even integers, beginning with 2, must be taken for their sum to equal 420? A. 20 В. 21 C. 210 D. 209 14. Find the sum of the integers from -20 to 80. А. 5000 B. 3030 С. 3000 D. 3060

Q: An arithmetic sequence is given by an+1 = 2 and azn+1 = 14. Express the arithmetic sequence in terms…

A:

Q: Use any of these formula (an = 1/2 (a₁ + an) or an = /[2a₁ + (n − 1)d] to solve for the sum of the…

A: Given :an=n2a1+an an=n22a1+n-1d use Sn for sum1. Sum of first even counting numbers :2, 4, 6, 8.....…

Q: 15. Using the arithmetic progression in number 14, what is the 8th term of the sequence? a. 37 b. 38…

A:

Q: The second term of a GP is 24 and the sixth term is 121.5, the first term of the sequence will be A.…

A: Solve the following

Q: The sum of the first 50 terms in the arithmetic sequence 50 + 48 + 46 + ... Is A. 98 D. -52 В. 50 E.…

A: In this question we are given with a series and we have to find the sum of first 50 trends of the…

Q: Find the direct formula of a sequence given by 3, -6, 12, -24, 48... an = (-2)n-1 an = 3(-2)n an =…

A:

Q: Find a formula for the general term a, of the sequence, {1. - 36 216 1296

A:

Q: 2. The third term of an arithmetic sequence is x and a, = 19x + 6. Find the twelfth term. 3. Php…

A: given

Q: Find the first 5 terms of the sequence a = 3" -6. 9, 15, 33, 87, 249 -3, 0, 3, 6, 9 а. -3, 3, 21,…

A: an=3n-6

Q: 1. How many terms are there in an arithmetic sequence where a̟ = 12,an = 60 and d = 8? %3D

A: Note: Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: Find the sum of the first 7 terms of the sequence. The formula for the sum of the sequence is given…

A:

Q: 43. what is the next sequence S6, M6. T7, WA. T8.? M10 O F6 4. what is the next number in the…

A:

Q: Find the sum of the sequence: {1 - 0.09 + 0.092 – 0.093 + . + 0.0924). Remember to use the 25th term…

A:

Q: In a geometric progression, the sum of the first term and the third term is 10 while the difference…

A:

Q: Find the explicit formula for the geometric sequence c, With the following information given. C1 10…

A:

Q: Find the sum of the first n terms of the following arithmetic sequence. a1 = 2, d = - 4; n = 6 O A.…

A: Given problem:- a1 = 2 ,d = -4 ,n=6  To find:-  Sum of n terms of given arithmetic sequence

Q: Find the missing number in the sequence 7,9, 13, 19,... A 20 С 26 B 27 D 21 2. Subtract 23 123 from…

A:

Q: List the first five terms of the sequence {4.8. 12. ... (4n)} ♥

A: In this question, we will find the first five terms of the sequence.

Q: An arithmetic sequence has terms as = 14 and a11 = 35. Find a1. a. -35 b. 4 с. -12 d. е. -28

A:

Q: Find the direct formula of a sequence given by 3, -6, 12, -24, 48.. An = (-2)n-1 an = 3(-2)n an =…

A: To find the direct formula of a sequence  3,-6,12,-24,48,.....

Q: The second term of a GP is 24 and the sixth term is 121.5, the first term of the sequence will be А.…

A:

Q: 1. S: (0, 6, 12, ...} S: (2, 4, 6, ..) S (1.5, 1.75, 2, ...} 15

A: We’ll answer the first 3 question since the exact one wasn’t specified. Please submit a new question…