Question

If 0.2, 0.3 -0.8,... is the arithmetic progression then d = (-0.1, -0.5, 0.1)​

Answer 1

t2 - t1

-0.3-0.2

minus minus plus

-0.5

it is true

Answer 2

Answer:

The arithmetic progression is: 0.2, -0.5, -0.12, -0.19,..............

The value of d =  - 0.7

Step-by-step explanation:

• Arithmetic progression: Arithmetic progression is a series of numbers, where the difference between two consecutive numbers is fixed.

       Suppose 'a' is the first term of an arithmetic progression and 'd' is the common difference, then the series will be:

        a, (a + d), (a + 2d), (a + 3d), (a + 4d),...............................

•  Series construction:

       The given series : 0.2, 0.3 -0.8,...

                                    = 0.2, -0.5, ..........

      Common difference = d = -0.5 - 0.2 = - 0.7

     So, the series will be: 0.2, (0.2-0.7), (0.2-0.7-0.7), (0.2-0.7-0.7-0.7),........

                                       = 0.2, -0.5, -0.12, -0.19,.................

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