What is the explicit rule for this geometric sequence?
1 answer:
<span>a4 = 3*4 = 12. Answer: 3,6,9,12. 3) an = 3n – 5 a1 = 3*1-5 = -2 a2 = 3*2 – 5 = 1 a3 = 3*3-5 = 4 a4 = 3*4 – 5 = 7 Answer: -2,1,4,7. 5) an = 3n a1 = 31= 3 ... 21) an = (-1)n; a50. Answer: a50 = (-1)50 = 1. 23) an = ;a12. Answer: #25-40: write an expression for the nth term of the sequence. 25) 2,4,6,8,10…. Answer: an = 2n ...</span><span>
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.4=2/5
80=2
X =5
2x=400
X=200
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Answer:
Let the two equal angles be x,
so,
x + x + 138° = 180°
or, 2x = 180° - 138°
or, 2x = 42°
so, x = 42°/2
so, x = 21°
21° is the answer.
h
0
2
4
6
1 = 1/2(0) + 1
2 = 1/2(2) + 1
3 = 1/2(4) + 1
4 = 1/2(6) + 1
hope this helps!
