Answer:
Step-by-step explanation:
a₁ = 15
a₂/a₁ = 45/15 = 3
a₃/a₂ = 135/45 = 3
...
It is a geometric sequence with a common ratio r=3.
Sum of first 12 terms = a₁·(1-r¹²)/(1-r)
= 15·(1-3¹²)/(1-3)
= 15·(-531,441)/(-2)
= 3,985,800
Answer:
4/8x/xsquared/3x
Step-by-step explanation:
In 6+(w−10)=5 , subtract 6 from both sides to isolate w-10:
w-10 = -1
Next, add 10 to both sides:
w = 9
Didn’t I just answer this same question some minutes ago?
