Is a acute angle always in the socially’s triangle?
1 answer:
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Plug n = 1 into the original formula to get
an = 14 - 9n
a1 = 14 - 9*1
a1 = 5
So the first term is 5
The common difference is -9 as this is the slope in front of the n term. This means each term is going down by 9 each time. Notice the second term is
an = 14-9n
a2 = 14-9*2
a2 = -4
and so on...
To get the nth term, we subtract 9 from the (n-1)st term
That's the same as saying
So all together, the rule is
Final Answer: Choice B
an = 14 - 9n
a1 = 14 - 9*1
a1 = 5
So the first term is 5
The common difference is -9 as this is the slope in front of the n term. This means each term is going down by 9 each time. Notice the second term is
an = 14-9n
a2 = 14-9*2
a2 = -4
and so on...
To get the nth term, we subtract 9 from the (n-1)st term
That's the same as saying
So all together, the rule is
Final Answer: Choice B