Find that 10th term of each arithmetic sequence
1 answer:
1.
4th term = a1 + 3d = 12 (where a1 = first term and d = common difference.)
7th term = a1 + 6d = 20.4
subtract 4th from 7th term, we get:-
3d = 8.4
d = 2.8
So 10th term = 7th term + 3(common difference)
= 20.4 + 3(2.8)
= 20.4 + 8.4
= 28.8 (answer)
All the rest can be answered in the same way.
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Answer:
Step-by-step explanation:
a1 = 7
a2 = 4(7) = 28
a3 = 4(28) = 112
a4 = 4(112) = 448
a5 = 4(448) = 1792
a6 = 4(1792) = 7168
Factored, the trinomial equals (x+5)(x+5) or (x+5)^2
