Answer:
Step-by-step explanation:
Given
Solving (a): T7
Substitute 7 for n in
Calculate S7 and S6
So:
Solving (b): Tn
Where
Calculate
We have:
Open brackets
So:
Collect Like Terms
A conference room can seat a maximum of 85 people. The Principal and two counselors need to meet with the school's juniors to di
1 answer:
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