28th term of -242, -251, -260

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

8 0

Answer:

-485

Step-by-step explanation:

Formula

<em><u>Givens</u></em>

an = a28

n = 28

a1 = - 242

<em><u>Solution</u></em>

d = a3 - a2

d = -260 - - 251

d = -260 + 251

d = - 9

an = a1 + (n-1)d

an = -242 + (n - 1)(-9)

a28 = - 242 + 27*(-9)

a28 = - 242 - 243

a28 = - 485

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