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18.
Find the common difference of the arithmetic sequence.

–2, [tex]-1\frac{4}{5}[/tex], [tex]-1\frac{3}{5}[/tex], [tex]-1\frac{2}{5}[/tex], . . .

A. [tex]-\frac{1}{5}[/tex]

B. -5

C. 5

D. [tex]\frac{1}{5}[/tex]

Respuesta :

maddymcg408

Answer:

1/5 or 0.2

Step-by-step explanation:

Answer:

The common difference is  or 0.2

Step-by-step explanation:

Given:

Arithmetic Sequence -2, -1 4/5, -1 3/5, -1 2/5,

First term      = a₁ = -2

Second term = a₂ =  

Third term     = a₃ =  

Fourth term = a₄ =  

To Find:

Common Difference = d = ?

Solution:

Formula for Common Difference d ,

∴  

The common difference is  or 0.2