Find the nth term in the series: 3, 7, 11, 15, 19
Find the difference between each value. 7-3, 11-7 ... For this series the difference is 4. The nth term is then 4n + or - a constant. The series is 3, 7, 11.. each of these is 1 below a multiple of 4. 41- 1 =3 42- 1=7 and so on. So the nth term would be 4n-1 ....
HW
Related Maths GCSE answers
All answers ▸Triangle PQR is a right angled triangle. PQ is the hypotenuse and is 5cm long and QR has length 3cm. What is the length of side PR? Show your working.
Find the values of a, b and c in the equation: (5x + 3)(ax + b) = 10x^2 + 11x + c.
Differentiate f(x) = 3x^2+5x+3
The value of a new car is £18000. The value of the car decreases by 25% in the first year, and 12% in each of the next 4 years. Work out the value of the car after 5 years.