op56949 op56949

16-10-2020
Mathematics

contestada

Find the 87th term of this sequence: 157, 150, 143, ...

Respuesta :

unicorn3125 unicorn3125

17-10-2020

Answer:

[tex]\bold{a_{87}=-445}[/tex]

Step-by-step explanation:

[tex]a_1=157\\a_2=150\\\\d=150-157=-7\\\\a_n=a_1+d(n-1)\\\\a_{87}=157+(-7)(87-1)=157-7\cdot86=-445[/tex]

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