Given:
The geometric sequence is:
To find:
The 9th term of the given geometric sequence.
Solution:
We have,
Here, the first term is:
The common ratio is:
The nth term of a geometric sequence is:
Where, a is the first term and r is the common ratio.
Substitute to find the 9th term.
Therefore, the 9th term of the given geometric sequence is 5103.
She is going to practice piano for 80 minutes. First you want to divide the number of minutes in the lesson by 5 to find how many times 5 minutes goes by in 20 minutes. Next you want to multiply your answer for that, which should be 4, by the amount she wants to practice. So you do 4 x 20, and get 80 minutes total.
Every letter is either red or blue. So the probability is 0.
Step-by-step explanation:
As instructed
Use Elimination Method....
2x - y = 2
2x - 2 = y
y = 2x - 2 ----------- equation 1
5x + y = -9
Substitute for y
5x + 2x - 2 = -9
7x = -9 + 2
7x = -7
x = -7/7
x = -1
Substitute for x in equation 1
y = 2x - 2
y = 2(-1) - 2
y = -2 - 2
y = -4
Step-by-step explanation:
use the slope formula
y2-y1 / x2-x1