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:
It Is The 3rd Choice, Y = -1/4( 4x - 8)
Step-by-step explanation:
This Is Becuase -1/4 times 4x is -1x which is negative x. Then -1/4 times -8 is 2.
Do not listen to the answer below it is wrong.
Answer:
havarti? maybe 4 im sorry if its wrong
Step-by-step explanation:
Zero because -12 does not equal 12
Answer:
The first part is C) The increase in loudness per centimeter is the same for both
The second part is A) Thor's
Step-by-step explanation:
First part:
<u>Whose loudness increases more per additional centimeter of height?</u>
C) The increase in loudness per centimeter is the same for both
Second part:
<u>Whose strike is louder when he strikes from a height of 40 centimeters?</u>
A) Thor's
I did it on Khan and it was correct.