What is the advantage of using an array of telescopes?

Counting calculus students. About A university offers 3 calculus classes: Math 2A, 2B and 2C. In both parts, you are given data

OleMash [197]

Answer:

Part (a) n(A∩B∩C) = 4

Part (b) n(A∪B∪C) = 54

Explanation:

n(A) = no. of students who took Math 2A

n(B) = no. of students who took Math 2B

n(C) = no. of students who took Math 2C

n(A∩B) = no. of students who took both Math 2A and 2B

n(A∩C) = no. of students who took both Math 2A and 2C

n(B∩C) = no. of students who took both Math 2B and 2C

n(A∩B∩C) = no. of students who took all three Math 2A, 2B and 2C

n(A∪B∪C) = no. of total students in a group

∩ represents Intersection and ∪ represents Union

Part (a)

n(A∪B∪C) = n(A) + n(B) + n(C) - n(A∩B) - n(A∩C) - n(B∩C) + n(A∩B∩C)

Where n(A∩B∩C) represents the number of students who took all three classes and n(A∪B∪C) represents the total number of students in group A

157 = 51 + 80 + 70 - 15 - 20 - 13 + n(A∩B∩C)

Re-arranging the equation to solve for n(A∩B∩C) since we want to find out those students who took all three classes

n(A∩B∩C) = 157 - 51 - 80 - 70 + 15 + 20 + 13

n(A∩B∩C) = 4

So there are 4 students in group A who took all three classes

Part (b)

n(A∪B∪C) = n(A) + n(B) + n(C) - n(A∩B) - n(A∩C) - n(B∩C) + n(A∩B∩C)

This time we are given n(A∩B∩C) students who took all three classes and want to find n(A∪B∪C) that is total number of students

n(A∪B∪C) = 28 + 28 + 25 - 11 - 9 - 10 + 3

n(A∪B∪C) = 54

So there are total 54 students in group B

8 0

4 years ago

What is information technology ?

ella [17]

Information technology can be defined as the study or use of systems for storing, retrieving, and sending information. Can be abbreviated to IT.

7 0

3 years ago

Read 2 more answers

The social commerce feature that includes a stream of events to create a history for friends to view is/are called ___________

lesya692 [45]

The social commerce feature that includes a stream of events to create a history for friends to view is called a timeline.
You can see it on Facebook, or any other social media you use - timeline is where you can see what other people are doing, or where they can see what is happening in your life, if you choose to share that with your friends on a social media network of your choice.

4 0

3 years ago

HW7.24. Return nth integer from CSV string The function below takes two parameters: a string parameter: CSV_string and an intege

kotykmax [81]

Answer:

The solution code is written in Python 3.

def processCSV(CSV_string, index):
data = CSV_string.split(",")
result = data[index]
return int(result)
processCSV('111,22,3333,4', 2)

Explanation:

Firstly, create function and name it as processCSV() with two parameters, CSV_string and index (Line 1).

Since the CSV_string is a collection of integers separated by comma, we can make use of Python String built-in method split() to convert the CSV_string into a list of numbers by using "," as separator (Line 2).

Next, we can use the index to extract the target value from the list (Line 3).

Since the value in the list is still a string and therefore we shall use Python built-in method int() to convert the target value from string type to integer and return it as output of the function (Line 4)

We can test our function by using the sample test case (Line 6) and we shall see the expected output: 3333.

8 0

3 years ago

A short circuit can cause _______ because there is nothing in the circuit to limit the current and absorb the electrical energy.

Marta_Voda [28]

Answer:

Fire

Explanation:

You'll get a giant spark. The electricity will flow freely causing over-heating or fire.

4 0

3 years ago