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Sethredgo
Answered

What is the sum the first 15 terms 6+6+6+6+6+...?​

Sagot :

Albertmeyorgo

Answer:

is the formula of 6plus6 is for Under number fuctions of the fuctions number is 6plus6

Step-by-step explanation:

Step 1; number 1

step 2: number 2

step 3:number 3

SANA MAKATULONG..

Jeromequiapobacasmotgo

Answer:

S15 = 510

Step-by-step explanation:

formula:

sn = \frac{n}{2} (2a1 + (n - 1)d)sn=

2

n

(2a1+(n−1)d)

Given:

a1 = 6

d = 4

n = 15

Sn = ?

sn = \frac{n}{2} (2a1 + (n - 1)d)sn=

2

n

(2a1+(n−1)d)

sn = \frac{15}{2} (2(6) + (15 - 1)4)sn=

2

15

(2(6)+(15−1)4)

sn = 7.5(12 + (14)4)sn=7.5(12+(14)4)

sn = 7.5(12 + 56)sn=7.5(12+56)

sn = 7.5(68)sn=7.5(68)

sn = 510sn=510

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