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Find the term indicated in each of the following arithmetic sequences.

1. 3, 5, 7, 9,... 15ᵗʰ term​
2. 99, 88, 77, 66,... 12ᵗʰ term
3. -8, -3, 2, 7,... 16ᵗʰ term​

with solution pls.


Sagot :

Answer:

1. an=a1+(n-1)d

n=15, a1=3, d=2

a15= 3+(15-1)2

= 3+(14)2

= 3+28

= 31

15ᵗʰ term is 31

2. an=a1+(n-1)d

n=12, a1=99, d=-11

a12= 99+(12-1)-11

= 99+(11)-11

= 99-121

= -22

12ᵗʰ term is -22

3. an=a1+(n-1)d

n=16, a1= -8, d=5

a16= -8+(16-1)5

= -8+(15)5

= -8+75

= 67

16ᵗʰ term is 67

Step-by-step explanation:

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