Answer:
n = -6
Step-by-step explanation:
2 ( n + 5 ) = -2
First, solve the brackets.
2n + 10 = -2
Now take 10 to the right side.
2n + 10 -10 = -2 - 10
2n = -12
Then divide both sides by 2.

And now you'll the value of n.
n = ( -6 )
Answer:
Step-by-step explanation:
The equation for the area of a circle is A=
.
A=area
r=radius
We were given the diameter of the circle not the radius, so we need to solve for the radius.
Radius=(1/2)Diameter So,
(1/2)6=3mm
Now we can solve for the area.
3^2(3.1415926)=28.2743mm
Now round to two decimal places.
28.27mm
Answer: 25
Step-by-step explanation:
Answer: self-selection bias
Step-by-step explanation:
In statistics, self-selection bias occurs in a situation where individuals select themselves into a group, leading to a biased sample with nonprobability sampling.
It is the problem that very always results when survey respondents are allowed to decide entirely for themselves whether or not they are interested in a survey. To the extent that respondents' propensity for participating in the study is correlated with the substantive topic the researchers are trying to study, there will be self-selection bias in the resulting data.
In most cases, self-selection will lead to biased data, as the respondents who choose to participate will not well represent the entire target population.