18-7f=4 13 + 3p = 7pls help me solve this two questions
2 answers:
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Answer:
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Step-by-step explanation:
i hope this is right it took me 30 min for the ascii
Answer:
the common difference is 6.
Step-by-step explanation:
Given;
first term of an AP, a = -7
let the common difference = d
The third term is written as;
T₃ = a + 2d
The eight term is written as;
T₈ = a + 7d
The ratio of the eight term to third term = 7:1
Therefore, the common difference is 6.