Question

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Answer 1

I) a=10

d=-3

n = 30

an=a+(n-1)d

=10+(30-1)-3

=10-90+3

= -80+3

= -77

ii) a=-3

d=2.5

an=11

an=a+(n-1)d

=-3+(11-1)2.5

=-3+27.5-2.5

=22

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Answer 2

Answer:

Step-by-step explanation:

(i)-77

(ii)22

a=10

d=-3

n = 30

an=a+(n-1)d

=10+(30-1)-3

=10-90+3

= -80+3

= -77

ii) a=-3

d=2.5

an=11

an=a+(n-1)d

=-3+(11-1)2.5

=-3+27.5-2.5

=22