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
Answer: A. -976563
Answer: You need to show the question for me to answer it. In other words, provide more context
Step-by-step explanation:
Horizontal means the equation is y=something
(x,y)
(0,-2)
y=-2 is the equaiton
or
f(x)=-2
You multiple the types of cones by the ice cream flavors and toppings
2•3•3
Answer:
Prism, Pyramid not including vertex
Step-by-step explanation:
Apex
