17)
9, 11, 13, 15
first term = 9
d = 2
n = 10
a_10 = 9 + (10 - 1)2
= 9 + 18
= 27
C
18)
2, 7, 12, 17
first term = 2
d = 5
n = 14
a_14 = 2 + (14 - 1)5
= 2 + 65
= 67
A
19)
5, 10, 15, 20
first term = 5
n = 25
a_25 = 5 + (25 - 1)5
= 5 + 120
= 125
L
20)
13, 17, 21, 25
first term = 13
d = 4
n = 12
a_12 = 13 + (12 - 1)4
= 13 + 44
= 57
M
make this answer brainliest and I'll answer some of your questions
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Answers & Comments
17)
9, 11, 13, 15
first term = 9
d = 2
n = 10
a_10 = 9 + (10 - 1)2
= 9 + 18
= 27
C
18)
2, 7, 12, 17
first term = 2
d = 5
n = 14
a_14 = 2 + (14 - 1)5
= 2 + 65
= 67
A
19)
5, 10, 15, 20
first term = 5
d = 5
n = 25
a_25 = 5 + (25 - 1)5
= 5 + 120
= 125
L
20)
13, 17, 21, 25
first term = 13
d = 4
n = 12
a_12 = 13 + (12 - 1)4
= 13 + 44
= 57
M
make this answer brainliest and I'll answer some of your questions