What is the area of the triangle shown? A) 5 B) 6 C) 12 D) 30
2 answers:
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Assuming you mean
first term is n=1, so 1²+3=1+3=4
2nd is n=2 so 2²+3=4+3=7
3rd is n=3 so 3²+3=9+3=12
the first 3 terms are 4,7,12
first term is n=1, so 1²+3=1+3=4
2nd is n=2 so 2²+3=4+3=7
3rd is n=3 so 3²+3=9+3=12
the first 3 terms are 4,7,12
Answer: - 5120
Step-by-step explanation:
The first thing is to find the common ratio , since it is a geometric sequence.
common ratio ( r ) = second term / first term
r = -10/-5
r = 2
Using the formula for the nth term of a geometric sequence ;
= a
The 11th term will thus be:
= -5 X
= -5 x 1024
= -5120