Answer:
e. All of the reasons are correct.
Step-by-step explanation:
In most cases, studying all the population is impossible. In other cases, it is too expensive or time consuming.
A sample will give us, in most cases and combined with tools of statistical analysis (hypothesis testing or confidence intervals), enough information to make an unbiased estimation about the characteristic of the population we are studying.
Answer:
50 liters per minute.
Step-by-step explanation:
6.3 r < -45.36
Here first we have to solve for r and for that we need to get rid of 6.3 .
To get rid of 6.3, we divide both sides by 6.3 that is
r < -7.2
So the solution is all the values which are less then -7.2
And for graph, we put a blank circle or a parenthesis that is () on -7.2 and extend a line to the left side since the inequality is less then .
Answer:
4(3 + 2x)(-3 + 2x)
Step-by-step explanation:
Answer:
Below.
Step-by-step explanation:
The area = area of a rectangle on the same base and between the same parallel lines
= (15 + 6) * 8
= 21 * 8
= 168 yd^2.
