STEP 1
Mean =

STEP 2
Subtract the mean from each data value then square the answer

⇒


⇒


⇒


⇒


⇒


⇒

STEP 3
Add the squared answers in STEP 2 then find the mean

STEP 4
Square root the answer in STEP 3

Standard deviation is 236.5
Answer:
y = 7.5
x = 7.5√3
Step-by-step explanation:
sin(30) = 1/2
cos(30) = √3/2
Above is rule
==>
y = 7.5
x = 7.5√3
Answer:
-x+3
Step-by-step explanation:
2x^2-5x+3 Square 2x
4x-5x+3 combine like terms
-x+3
Hope this helps
Answer:
The 10th term is -524,288
Step-by-step explanation:
The general format of a geometric sequence is:

In which r is the common ratio and
is the previous term.
We can also use the following equation:

In which
is the first term.
The common ratio of a geometric sequence is the division of the term
by the term 
In this question:

10th term:

The 10th term is -524,288