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meriva
4 years ago
9

A researcher wishes to investigate differences in college admission rates between students at two high schools. She randomly sel

ect 100 students from the 200 seniors at school a and 100 students from the 300 students at school b. What sampling method did she use?
Cluster
Stratified
Simple Random
Systematic
Mathematics
2 answers:
kodGreya [7K]4 years ago
7 0

56

sorry thisnis wrong

i need point

Katen [24]4 years ago
5 0

Answer: stratified

Step-by-step explanation:

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What is the circumference of quadrilateral ABED in cm?
Natasha2012 [34]

the perimeter of quadrilateral ABED is 36.

<h3 /><h3>What is circumference?</h3>

A circumference is the total distance around a plane shape. Another name for circumference is called perimeter

To calculate the circumference of the quadrilateral, we use the formula below.

Formula:

  • Peri. of ABED = /AB/+/BE/+/ED/+/DA/............. Equation 1

From the Diagram,

Given:

  • /AB/ = /DC/ = 8 cm,
  • /BE/ = 2×/DA/ = 2×6 = 12 cm
  • /ED/ = √(6²+8²) = √(36+64) = √100 = 10 cm
  • /DA/ = 6 cm

Substitute these values into equation 1

  • Peri. of quadrilateral ABED = 8+12+10+6
  • Peri. of quadrilateral ABED  = 36 cm

Hence, the perimeter of quadrilateral ABED is 36.

Learn more about circumference here: brainly.com/question/20489969

#SPJ1

4 0
2 years ago
What is 3/9 =4/y y equals
mariarad [96]

Answer:

Y = 12

Step-by-step explanation:

3/9 = 4/y

By cross multiplying, we get

3*y = 4*9

3y = 36

Y = 12

4 0
3 years ago
I need help with this plzz
Schach [20]

Answer:

5/2

Step-by-step explanation:

6 0
3 years ago
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What is -3x +3y = 15 <br> -2x - 6y = -14<br>​
Katarina [22]

Answer:

Im doing it right now one second

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Heather makes $6.50 per hour. Every three months, she is eligible for a 2% raise. How much will she make after 2 years if she ge
sammy [17]

Answer:

$7.62 per hour


Step-by-step explanation:

Since, Heather gets a raise every 3 months, in 2 years, she will get a raise 8 times (2years = 24 months, 24 divided by 3 is 8).

Now it becomes a compound growth problem. We can use the formula shown below to solve these type of problems.

F=P(1+r)^t

Where,

  • F is the future value (what we want to find)
  • P is the present rate ($6.5)
  • r is the rate of growth, in decimal (2% growth means 0.02)
  • t is the time frame, number of times compounding occurs (for our case we have figured it to be 8)

<u>Now plugging in all the info, we get the value of F:</u>

F=P(1+r)^t\\F=6.5(1+0.02)^8\\F=6.5(1.02)^8\\F=7.62


Thus, after 2 years, Heather's hourly rate will be $7.62


7 0
3 years ago
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