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blsea [12.9K]
3 years ago
5

Create a simple ER model depicting entities and relationship lines for each data scenario.

Mathematics
1 answer:
kicyunya [14]3 years ago
5 0

Answer:

Please find the ER model in the attachment file.

Step-by-step explanation:

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None if its empty.
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A parallelogram has a length of 4 inches and a width of 9 inches. What is it's area?
tankabanditka [31]

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Step-by-step explanation:

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3 years ago
A math teacher randomly selects one student in a class to write a probability question on a chalkboard. The teacher then randoml
Fittoniya [83]

Answer:

The probability to the nearest thousandth is 0.386

Step-by-step explanation:

Firstly, we will need to know the number of girls and the total number of students in the class.

We have the ratio as 3:5 for boys and girls with the number of boys being 18

What we have is thus;

3:5 = 18:g

3/5 = 18/g

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g = 90/3

g = 30 girls

Thus, we have 18 boys and 30 girls with a total of 48 students.

The probability that the teacher selects a girl to write the question on the board is 30/48 = 5/8

Now, we intend selecting another girl to answer the question. This is like a probability without replacement. So this means that the number of girls we have now is 29 and the number of students we are selecting from is 47 students

Thus, the probability of selecting a girl to answer the question becomes 29/47

The joint probability is thus; 29/47 * 5/8 = 145/376 = 0.3856

To the nearest thousandth, we have 0.386

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3 years ago
PLEASE HELP! URGENT! <br> I don’t know how to graph this
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Step-by-step explanation:

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