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Rama09 [41]
3 years ago
10

If the nth term of the sequence -1 , 4, 9, 14..... Is 129. Then find the value of n. ​

Mathematics
2 answers:
Leya [2.2K]3 years ago
8 0

Answer:

27

Step-by-step explanation:

129-(-1) = 130

130/5 = 26

26+1 = 27

Elodia [21]3 years ago
8 0

Answer:

n = 27

Step-by-step explanation:

This is Arithmetic sequence

a = -1

Common difference = 4 - (-1) = 4 +1 = 5

an = a + (n-1)d

129 = -1 + (n-1)*5

129 + 1 = (n-1)*5

130 = (n-1)*5

130/5 = n - 1

26 = n - 1

n = 26 + 1

n =27

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Step-by-step explanation:

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4 years ago
-(-8)= can someone please solve this? Is a fill in the blank.
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3 years ago
Katie has a collection of nickels, dimes and quarters with a total value of
garik1379 [7]

10d+ 25q+5n= 805

D= n+8

Q= n+ 5



10d+ 25q+5n= 805

10(n+8)+25(n+5)+5n=805

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So 15 nickels ,23 dimes and 20quarters .


To check

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