Find P So That The Numbers 7p+2, 5p+12, 2p-1 Form An Arithmetic Sequence., A. -8, B. -5, C. -13, D. -23

Find p so that the numbers 7p+2, 5p+12, 2p-1 form an arithmetic sequence.

a. -8
b. -5
c. -13
d. -23

Answer:

D. -23

Step-by-step explanation:

Arithmetic sequences have a common difference (d) which may be obtained by subtracting a term with the term before it.

d = a_{n} - a_{n-1}

5p + 12 - (7p + 2) = 2p - 1 - (5p + 12)

5p - 7p + 12 - 2 = 2p - 5p - 1 - 12

-2p + 10 = -3p - 13

-2p + 3p = -10 - 13

p = -23

Checking:

p = -23

7p + 2 = -159

5p + 12 = -103

2p - 1 = -47

d = 56


Comments

Popular posts from this blog

Isa Sa Mga Programa Ng Barangay Maligaya Ay Ang Pagkakaroon, Ng Feeding Program Para Sa Mga Batang Walo Hanggang Sampung, Taong Gulang. Sila Ay Binibi

First Person Who Answers This Will Be Brainliest!, When You Brainstorm, Does It Need To Be In Complete Sentences Or Can It Be In Bullet Points?