217k views
3 votes
Find the next two terms of the sequence:

2050, 1990, 1930, 1870, 1810, 1750
The next two terms of the sequence are

2 Answers

4 votes

Answer: The next two terms are 1690 and 1630 in that order

===============================================================

Step-by-step explanation:

This is an arithmetic sequence. We are adding -60 to each term to get the next term. Put another way, we are subtracting 60 from each term to get the next.

term 1 = 2050

term 2 = (term1) + (-60) = (term1) - 60 = 2050 - 60 = 1990

term 3 = (term2) + (-60) = (term2) - 60 = 1990 - 60 = 1930

term 4 = (term3) + (-60) = (term3) - 60 = 1930 - 60 = 1870

and so on

Keeping this pattern up, we get these next two terms

1750 - 60 = 1690

1690 - 60 = 1630

which are the two answers

-----------

If you want to use a formula, then a1 = 2050 is the first term and d = -60 is the common difference. We get this nth term formula

a(n) = a1 + d(n-1)

a(n) = 2050 + (-60)(n-1)

a(n) = 2050 - 60n + 60

a(n) = -60n + 2110

Then note that six terms of the sequence are given to us. This means we want to find the 7th term, so we plug in n = 7 to get

a(n) = -60n + 2110

a(7) = -60(7) + 2110

a(7) = -420 + 2110

a(7) = 1690

The 7th term is 1690

Repeat for n = 8

a(n) = -60n + 2110

a(8) = -60(8) + 2110

a(8) = -480 + 2110

a(8) = 1630

The 8th term is 1630

User Alwin Jose
by
4.9k points
6 votes

Answer:

The answer is 1690, and then 1630

Step-by-step explanation:

2050, 1990, 1930, 1870, 1810, 1750, 1690, 1630

Each number is going down by 60

User Vignesh Kumar A
by
4.7k points