Answer:
the value is k=
Step-by-step explanation:
Answer:
We can't directly answer it without the number of friends, so it would need to be a variable.
A=number of friends. X= slices
2/3 ÷ a = x
Answer:
I think it's 5 triangle are needed to make star
Sn=sum of the n terms of the geometric sequence.
a= the first term
r=the common ratio
n=numbers of terms.
Sn=a[(1-r^n)/(1-r)]
In this case:
a=-3
r=a₂/a₁=15/-3=-5
n=9
S₉=-3[(1-(-5)⁹) / (1-(-5))=
S₉=-3(1+1953125)/6)=
S₉=-3(1953126/6)=
S₉=-3(325521)
S₉=-976563
<span>Answer: A. -976563
hope this helps :^)</span>
