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Minchanka [31]
3 years ago
13

I really need help with these..

Mathematics
1 answer:
Assoli18 [71]3 years ago
6 0

Answer:

OPTION C: 85

Step-by-step explanation:

We are given the sequence $ \{a_n\} = \{-5, -\frac{7}{2}, -2, -\frac{1}{2}, 1, \hdots\}.

The general form of an Arithmetic Progression (AP) is given by:

$ \{a, a + d, a + 2d, a + 3d, \hdots, a + nd, \hdots\} $

where, $ 'a' $ is the first term of the sequence and

$ 'd' $ is the common difference.

Here, $ a $ = -5

$ d = a + d - a = -\frac{7}{2} + 5 = \frac{3}{2} $

Therefore, $ a_{61} = a + 60d $

$ \implies a_{61} = -5 + 60(\frac{3}{2}) $

$ \implies a_{61} = - 5 + 90 = $ 85.

Hence, the answer.

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2

2

+

6

+

4

=

0

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a={\color{#c92786}{2}}

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-123

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