Answer:
D
Step-by-step explanation:
The midpoint is the average of the 2 endpoints, that is
midpoint = 
= 
= 2.5 → D
Answer:
4/5 ÷3/5
4/5×5/3(any time one is dividing a fraction, the dominator would go up while the numerator would come down).
=4/3
Answer:
a) cluster sampling
Step-by-step explanation:
In cluster sampling method, each member of a population is assigned to one and only one group.This means clusters are formed through probability method usually a simple random sampling.The participants in the clusters are the only one to be surveyed.
In this example, simple random sampling is used to identify 12 home rooms(cluster) where a group of 20 students (participants) in each room is given the survey.
Answer:
Step-by-step explanation:
Question
What is the value of x?
12 units
Answer:
Step-by-step explanation:18
15 units
20 units
24 units
Answer:
We have:
x < 4 AND x > a.
if a = 4 and we use an "or" instead of the "and" we have:
x < 4 or x > 4.
This is:
"x is larger than 4 or smaller than 4."
Then the solution of this is all the real numbers except the value x = 4.
The set of solutions can be written as:
{xI x ∈ R \ [4]}
Where this reads:
"x belongs to the set of the reals minus the number 4".
Or we also could write it as:
x ∈ (-∞, 4) ∪ (4, ∞)
Where we have two open ends in the "4" side, so the value x = 4 does not belong to that set.
