The mean is 35/5=7
The variance is the average of the sum of squared differences of each element from the mean:
v=((7-7)^2+(5-7)^2+(11-7)^2+(1-7)^2+(11-7)^2)/5
v=(0+4+16+36+16)/5
v=14.4
The answer to this question is y=3
80-3x=56, Subtract 80 from each side:
-3x = 56-80
-3x=-24
x will equal 8, hope this helps! Have a BLESSED day! :-)
Display board measurements = 10ft by 6ft
So all the sides would be 10ft, 10ft, 6ft, 6ft
Add them all together= 32ft
Ribbon length would need to be 32ft long
Answer:
Step-by-step explanation:
Given sequence is -5, -1, -5, -25,..
In any arithmetic series nth term is given by a + (n-1)d
where a is the first term
and d is the common difference.
d = nth term - (n-1)th term
For the given series
a = -5
lets take nth term as 2nd term and 1st term as (n-1)th term
d = -1-(-5)= -1+5 = 84
n th term = a + (n-1)d
using the formula for nth term
4th term = 5 + (4-1)8 = 29
