Write the related series for the finite sequence 3, 7, 11, 27. then find the sum

The sum =105

Step-by-step explanation:

It is given that, finite sequence 3, 7, 11, ..., 27.

Points to remember

1). For a finite sequence sum of n term is given by

Sum  = n/2[first term + last term]

2). nth term of of an AP

tₙ = a + (n - 1)d

Where a - First term

d - common difference

To find the number of terms in the given sequence

Here a = 3 and d = 7 - 3 = 4

tₙ = a + (n - 1)d

27  = 3 + (n - 1)*4

4(n -1) = 27 - 3 = 24

n - 1 = 24/4 = 6

n = 6 +1 =7

To find the sum

Sum  = n/2[first term + last term]

 = 7/2[3 + 27]

 = 7/2[30] = 7 * 15

 = 105

i think it would be c

mark brainliest if im right

step-by-step explanation:

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm