Find the geometric means in the following sequence. 47, ? , ? , ? , ? , - 789, 929 r select one: a. -6,580, -9,870, -13,160, -16,450 b. 329, 2,303, 16,121, 112,847 c. 2,303, -16,121, 112,847, -789,944 d. -329, 2,303, -16,121, 112,847
The explicit form of a geometric sequence is where is the first term while is the common ratio.
We are given the first term .
We are given the sixth term .
If we divide 6th term by 1st term this is the result:
Simplify both sides:
Take the fifth root of both sides:
The common ratio is -7.
So all we have to do is start with the first term and keep multiplying by -7 to get the other terms.
The terms -329,2303,-16121,112847 are what we are looking for in our choices.
That's the last choice.
Answer from: Quest
answer:
c. the third graph
Answer from: Quest
step-by-step explanation: the answer is 27. first multiply .32 by 25 which equals 8. then add 8 to 25 which gives you 33. then you subtract that from 6 since she gave 6 to her brother.
You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?
Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?