Answer:
The first one. Y^2 + Z^2 = X^2
Step-by-step explanation:
Using the Pythagorean theorem you would do a^2 + b^2= c^2 where a=y b=z and c=x.
4x-10=2x subtract 2x from both sides
2x-10=0 add 10 to both sides
2x=10 divide both sides by 2
x=5
Answer:
2/5
Step-by-step explanation:
make it reciprocal
2x/5 = 4/25
cross multiply the numbers
2x × 25 = 4×5
2x= 20/25
2x= 4/5
x = 2/5
Answer:
The correct answer is D. It is not true that cluster sampling uses randomly selected clusters and samples everyone within each cluster.
Step-by-step explanation:
Cluster sampling is a method of collecting samples and statistical data, by means of which a certain group formed by people, things, events, etc., is taken as a sample, which are not considered individually but as part of a whole, which is in turn a proportional representation of the universality of samples available in the field.
Now, since this type of sampling allows to embrace large groups of sample units, data are not always obtained from all the components of the cluster, but from those necessary to be able to quantify the desired statistics.
Answer:a²=b²+c² in a right angle triangle so answer is root 136
Step-by-step explanation:
