Answer: the first term of the series is 128
Step-by-step explanation:
In a geometric sequence, the consecutive terms differ by a common ratio. The formula for determining the sum of n terms, Sn of a geometric sequence is expressed as
Sn = a(1 - r^n)/(1 - r)
Where
n represents the number of term in the sequence.
a represents the first term in the sequence.
r represents the common ratio.
From the information given,
r = 1/4 = 0.25
n = 4
S4 = 170
Therefore, the expression for the sum of the 4 terms, S4 is
170 = a(1 - 0.25^4)/(1 - 0.25)
170 = a(1 - 0.00390625)/(1 - 0.25)
170 = a(0.99609375)/(0.75)
170 = 1.328125a
a = 170/1.328125
a = 128
Well the volume of the cylinder will be equal area of base time height
V = pi(4)^2 *(12)
The formula for the volume of a sphere is V = 4/3 πr³.
Answer:
Step-by-step explanation:
= 
2*(pq)= 2(
)= 
-3
= -3
= 
=
=
Answer:
I think its A
Step-by-step explanation:
