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3 years ago

Please help i will mark brainliest!

Mathematics

1 answer:

GuDViN [60]3 years ago

6 0

Answer:

Cluster Sampling

Step-by-step explanation:

I cant be 100% sure as i am not in statistics, but by definition cluster sampling is a probability sampling technique where researchers divide the population into multiple groups (clusters) for research (in this case its the phone book). Researchers then select random groups (three random pages) with a simple random or systematic random sampling technique for data collection and data analysis(interviews).

so that appears to be what is happening in this scenario.

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Help I need to turn this in today :)

Elodia [21]

Answer:

132 cm squared

Step-by-step explanation:

6x5=30

6x8=48

1/2(8x3)=12

Total added together is 132 cm squared

8 0

2 years ago

A. In the diagram above, angles ABCABC and CBDCBD are

Dovator [93]

Answer:

Step-by-step explanation:

3 0

2 years ago

4x + 2(x - 5) - 3(2x -4)

Olegator [25]

Answer:

Step-by-step explanation:

Pull out like factors :

2x - 4 = 2 • (x - 2)

(4x + (2 • (x - 5))) - 6 • (x - 2)

(4x + 2 • (x - 5)) - 6 • (x - 2)

Final Answer:

5 0

3 years ago

Pls help me math work

Murljashka [212]

Answer:

Area= 105.12 feet squared

7 0

3 years ago

The vertices of a parallelogram are at (-9, 12), (-3, 12), (-5, 10), and (–11, 10). What is the perimeter of the parallelogram?

eduard

let point A has coordinates (-9;12),B(-3;12),C(-5;10) and D(-11;10).Then the vector AB={6;0}, BC={2;-2}, CD={6;0}, AD={2;-2} and their and the length of the vectors

$|AB| = |CD| = \sqrt{ {6}^{2} + {0}^{2} } = \sqrt{36} = 6 \\ |BC| = |AD| = \sqrt{ {2}^{2} + {( - 2)}^{2} } = \sqrt{8}$

$p = 6 + 6 + \sqrt{8} + \sqrt{8} = \\ = 12 + 2 \sqrt{8} = 17.66\approx18$

7 0

3 years ago

Please help i will mark brainliest!​

Please help i will mark brainliest!