State the nth term of the following sequence: 3, 7, 11, 15, 19

First we look at the jump between each term:7-3=4, 11-7=4, 15-11=4, 19-15=4So we know that the difference in each step is 4. So our expression with look like 4n+d for some number d.Comparing what we have with what we want:4+d, 8+d, 12+d, 16+d, 20+d 3 7 11 15 19So d=-1. Hence the nth term expression is 4n-1.

Answered by Huw D. Maths tutor

5527 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve this set of simultaneous equations. 1. 4x+2y=12 2. 2x+3y=10


Solve the Simultaneous Equation: 2x + 3y = 15 and 5x + 4y = 13


Expand 5(2x-6)


What is standard deviation and how does it work for non-grouped data?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences