mamaKelly2266
30.03.2021 •
Mathematics
4) An arithmetic sequence has a 7th term of 54 and a 13th term of 94. Find the common difference Please answer!!
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Ответ:
20/3
Step-by-step explanation:
Every nth term takes the form of a + n*d, where a is the first term.
So 7th term = (54 = a + 7d), 13th term = (94 = a + 13d).
equate them both:
94 - 13d = 54 - 7d
40 = 6d
d = 40/6
Ответ:
idk
Step-by-step explanation: