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Thepotemich [5.8K]
3 years ago
8

The 2th term of The A.P is 7 and 9th term is 28, Find The comon difference and The first term.

Mathematics
1 answer:
Radda [10]3 years ago
8 0

Answer:

difference = 3, first term = 4

Step-by-step explanation:

given, a2 = 7

a9 = 28

wkt, a2 = a + d = 7

<u>a9 = a + 8d</u><u> </u><u>=</u><u> </u><u>28</u>

- 7d = - 21

therefore d = 3

and wkt, d = a2 - a

a = 7 - 3 = 4

HOPE THIS HELPS

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