Question

What is the next term in the pattern 0.4, 0.8, 1.2, 1.6, ...

Answer 1

it is 2.0

hope this helps

Answer 2

Answer:

The sum of the members of a finite arithmetic progression is called an arithmetic series.

Using our example, consider the sum:

0.4+0.8+1.2+1.6

This sum can be found quickly by taking the number n of terms being added (here 4), multiplying by the sum of the first and last number in the progression (here 0.4 + 1.6 = 2), and dividing by 2:

n(a1+an)

2

4(0.4+1.6)

2

The sum of the 4 members of this series is 4

This series corresponds to the following straight line y=0.4x+0.4