Question

X and y are the missingvterms of the following arithmetic sequence. 19,x,27,y. find the value of X+y​

Answer 1

Answer:

x= 23 and y = 31 and x+y = 54

Step-by-step explanation:

an = a + (n-1)d

a = 19

d = x - 19

a3 = a + (3-1)(x-19)

27 = 19 + 2x -38

27 = 2x -19

2x = 46

x = 23

d = y -27

x-19 = y -27

23-19 = y -27

4 = y -27

y = 31

x+y = 23 +41 = 54