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GREYUIT [131]
3 years ago
9

Hi can anyone pls help me in dis math problem I WILL MARK U AS BRAINLEIST!!!

Mathematics
2 answers:
ivanzaharov [21]3 years ago
4 0

Answer:

Triangles A & C are right triangles.

Step-by-step explanation:

Triangles A & C are right triangles because they make a 90 degree angle were a pair of legs intersect. That box in the corner of each triangle indicates that the triangle is 90 degrees, therefore a right triangle.  

WITCHER [35]3 years ago
3 0

Answer:

Sammy its been awhile how are you

Step-by-step explanation:

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Use numerals instead of words. If necessary, use / for the fraction bar.
Step2247 [10]
Here, AB ║ CD ;   EF ⊥ AB

Number of 90 degree formed by the intersections of EF and two parallel lines AB and CD is 8

Hope this helps!
7 0
3 years ago
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
2x + y -z=9<br> -x + 6y + 2z =- 17<br> 5x + 7y +z = 4
Effectus [21]

Answer:

Step-by-step explanation:

What is y?

3 0
3 years ago
Tiffany wants to buy a sweater with a selling price of $187. Today, the sweater is on sale for 31% off. What is the markdown? Wh
Akimi4 [234]
The sale price would be $129.03
7 0
3 years ago
Read 2 more answers
2. What inference can you make by comparing the measures<br> of variability?<br> I need the answer
d1i1m1o1n [39]

Answer:

16.02

Step-by-step explanation:

2. What inference can you make by comparing the measures

of variability?

I need the answer

16.02

7 0
2 years ago
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