An=a1r^(n-1)
given
a5=1/24
a10=1/768
we know that
a5=1/24=a1r^(5-1) and
a10=1/768=a1r^(10-1)
so
1/24=a1r^4
1/768=a1r^9
(a1r^9)/(a1r^4)=r^5=(1/768)/(1/24)=1/32
r^5=1/32
take 5th root of both sides
r=1/2
we have
a5=a1r^4=1/24
evaluate r^4 or (1/2)^4
1/16
a1(1/16)=1/24
times both sides by 16/1
a1=16/24
a1=2/3
the first term is 2/3
Answer:
Step-by-step explanation:
to answer question 2. you would need to simplify each fraction (A/B). On the table you made in question one the first fraction is 6/2 ll you need to do is simplify the fraction by 2.
2nd option or 3rd option hope I evened it out a bit
Answer:
60
Step-by-step explanation:
135 = (2x+15)
120 = 2x
x = 60
