we are given
airthematic sequence
we can use nth term formula

n is number of terms
an is nth term
d is common difference
a1 is first term
We are given
a7=40
we can use it



a18 = 106


we can subtract both equations



now, we can find a1

we can plug d=6


12th term:

now, we can plug values



so, 12th term is 70...........Answer
Answer:
The answer is 856.17.
Step-by-step explanation:
If you made the fraction into a decimal, you would get 856.166666666. If you round it to the nearest hundredth, you would get 856.17.
Answer:
x = 2/3
Step-by-step explanation:
Let's unpack the equation
from our definition of
:
(where
)
Now that we've got things defined in terms of familiar operations, we can simplify and solve for x:

Everything that is not 4/9
The standard deviation been hiked to the nearest tenth is 17.1