itzecho134 itzecho134

09-10-2020
Mathematics

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What’s the 69th term of the arithmetic sequence -13, -33, -53

Respuesta :

devishri1977 devishri1977

12-10-2020

Answer:

(-1373)

Step-by-step explanation:

a = 1st term = -13

Common difference = d = 2nd term - 1st term

d = -33 - (-13) = -33 + 13

d = -20

n = 69

nth term = a + (n-1)d

69th term = (-13) + 68 * (-20)

= -13 - 1360

= - 1373

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