Answer:
..
Step-by-step explanation:
..
YZ = 16. The triangles are congruent. This would be AAS so YZ = 16 because of CPCTC.
Answer:
d.a cluster sampling
Step-by-step explanation:
This plan exemplifies Cluster sampling. It is a sampling method where populations are placed into different separate groups like here into freshman, sophomore, junior, and senior classes. A random sample of these groups is then selected as here thirty students selected from each group to represent a specific population.<u> It is usually used in that type of research when there is no possible way to find information about a population as a whole.</u>
<h2>
An explicit formula for the given geometric sequence, 
</h2>
Step-by-step explanation:
The given geometric sequence:
- 8, - 40, - 200, - 1000
Here, first term(a) = - 8, common ration(r) =
= 5
To find, an explicit formula for the given geometric sequence = ?
We know that,
The explicit formula for the geometric sequence

∴ An explicit formula for the given geometric sequence


∴ An explicit formula for the given geometric sequence, 