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3 years ago

(Geometry) help is appreciated

Mathematics

2 answers:

Aleks [24]3 years ago

6 0

Answer:

21°

angles remain the same in dilutions but lengths don't

plss mark me brainliesttt

Assoli18 [71]3 years ago

4 0

ABC is the right angle which is the side you have to write

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What sampling method is used in the following examples. Is the method biased or not?

Romashka-Z-Leto [24]

Answers:

a) Stratified random sampling, or simply stratified sampling. Each group individually is known as a stratum. The plural is strata. The key here is that each stratum is sampled, though we don't pick everyone from every stratum. We randomly select from each unit to have them represent their unit. Think of it like house of representative members that go to congress. We have members from every state, but Be sure not to mix this up with cluster sampling. Cluster sampling is where we break the population into groups or clusters, then we randomly select a few clusters in which every individual from those clusters is part of the sample.
b) Simple random sampling (SRS). This is exactly what it sounds like. We're randomly generating numbers to help determine who gets selected. Think of it like a lottery. A computer is useful to make sure this process is quick, efficient and unbiased as possible. Though numbers in a box or a hat work just as well.

For each of the methods mentioned, they aren't biased since they have randomness built into their processes.

7 0

3 years ago

What is the twentieth term of the arithmetic sequence 21, 18, 15, 12, ... ?

Vaselesa [24]

Answer:

-36

Step-by-step explanation:

21, 18, 15, 12....

All you have to do is subtract 3 less on each number you get, until u get to the twentieth term....

21, 18, 15, 12, 9, 6, 3, 0, -3, -6, -9, -12, -15, -18, -21, -24, -27, -30, -33, -36

-36 is the twentieth term of this arithmetic sequence

Hope this helped!

Have a supercalifragilisticexpialidocious day!

8 0

2 years ago

Points that do not lie in the same plane are called________points

rodikova [14]

Answer:

non - collinear points

Step-by-step explanation:

points that dont lie on the same line

3 0

3 years ago

Someone pls help i need help with my math question

11111nata11111 [884]

Answer:

21 units

Step-by-step explanation:

6 0

1 year ago

Solve the formula for the specified variable. A=6P+4Prt for t

KatRina [158]

Your answer will be t = -3P/2Pr + A/4Pr. :)

6 0

2 years ago