Answer:
c. 1,464,843
Step-by-step explanation:
The sum of n terms of a geometric sequence with first term a1 and common ratio r is given by ...
sn = a1(r^n -1)/(r -1)
Filling in the values a1=3, r=5, n=9, we get ...
s9 = 3(5^9 -1)/(5 -1) = 1,464,843
Perpendicular lines have a negative reciprocal to the original slope, so for example, the negative reciprocal of 1/3 is -3 and the negative reciprocal of -2 is 1/2. The negative reciprocal of -6 is 1/6, which is your answer. I hope this helps!
The answer is 18 .
All you have to do is swich the numbers
Answer:
x < 12
Step-by-step explanation:
150 - 20 = 130
x < 130 / 10 - 1
x < 13 - 1
x < 12