Answer:
a. mean = - 1,115,000 visitors i believe not sure about b forgot all this
Step-by-step explanation:
do 11,150,000/10
Answer: x = 3 - sqrt 17 / 2 , x = 3 + sqrt 17 / 2
Step-by-step explanation:
2x^2 = 4 + 6x
divide both sides by 2
x^2 = 2 + 3x
move expression to the left
x^2 - 2 - 3x = 0
reorder the terms
x^2 - 3x - 2 = 0
use the quadratic formula
x = - (-3) +- sqrt (-3)^2 - 4 x (-2) / 2 x 1
calculate
x = 3 +- sqrt 17 / 2
answer
x = 3 - sqrt 17 / 2 , x = 3 + sqrt 17 / 2
Answer:
Step-by-step explanation:
The terms are the addends in the sum:
x, y, z
1st way
To solve this we need to know ratio.
Now we can see that odd numbers of geometric sequence are positive and even numbers are negative. 91 - odd number, so it will be positive. If ratio is equal to -1, than 91st number is
2nd way
Firstly, we need to find ratio.
Secondly, we need to use this formula