Dr. Lawrence is the director of Counseling Services at her university. She is planning to conduct a survey of 100 students at the university to see how aware they are of the counseling services that are offered at the university. She wants the proportion of first-time students and returning students in her sample to reflect the proportion in the university as a whole (15% first-time and 85% returning). Dr. Lawrence plans to stand in the Student Union and ask people to participate until she has given the survey to 15 first-time and 85 returning students. Which type of sampling method is Dr. Lawrence going to use

The type of sampling method Dr. Lawrence going to use is Quota Sampling.

Step-by-step explanation:

In quota sampling participants are chosen nonrandomly so it is not a representative sampling method.  In this case Dr.Lawrence has a quota of 15% for first-time students and 85% for returning, so the survey she is conducting is non-random. The sampling method she should use is Quota Sampling.

Step-by-step explanation:

To find the lengths of the enlarged triangle, we would find the scale factor from the given length

22.5/5 = 4.5

So to find the other sides you would multiply 3 and 6 by 4.5

3 * 4.5 = 13.5

6 * 4.5 = 27

So all 3 lengths of the triangle are 22.5, 13.5, and 27

To find the perimeter you add all

22.5 + 13.5 + 27 = 63

Your answer is 63