Answer :
Answer:
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Explanation:
To factorize the expression 10ax - 3y(5a-b) - 2bx, let’s follow these steps:
Distribute the terms within the parentheses:
Distribute -3y to both terms inside the second parentheses:
-3y(5a) becomes -15ay
-3y(-b) becomes 3yb
Combine the distributed terms with the original expression:
The expression now becomes: 10ax - 15ay + 3yb - 2bx
Factor by grouping:
Group the terms with common factors:
(10ax - 15ay) + (3yb - 2bx)
Factor out the common factors from each group:
5a(2x - 3y) + b(3y - 2x)
Rearrange the terms:
5a(2x - 3y) - b(2x - 3y)
Factor out the common binomial factor (2x - 3y):
The fully factored expression is:
(2x - 3y)(5a - b)
Therefore, the factorization of 10ax - 3y(5a-b) - 2bx is (2x - 3y)(5a - b)
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Answer:
### Class-9th
### Subject - Artificial Intelligence (AI)
### Set-B
### Test (Total Marks: 20)
#### 1) What is decoding? (2 marks)
Decoding is the process of interpreting and making sense of a message received. In communication, it involves translating received signals or symbols back into meaningful information.
#### 2) Describe the communication cycle. (5 marks)
The communication cycle is a process by which a message is sent by a sender and received by a receiver. The steps involved are:
1. **Idea Generation**: The sender thinks of an idea or message to communicate.
2. **Encoding**: The sender converts the idea into a message using words, symbols, or gestures.
3. **Transmission**: The encoded message is sent through a communication channel (e.g., spoken words, written text, electronic signals).
4. **Reception**: The receiver gets the message from the communication channel.
5. **Decoding**: The receiver interprets and understands the message.
6. **Feedback**: The receiver sends a response or feedback to the sender, indicating whether the message was understood.
#### 3) What is perspective? (2 marks)
Perspective refers to a particular attitude toward or way of regarding something; it is a point of view. In communication, perspective influences how messages are interpreted and understood.
#### 4) What are the three types of communication? (2 marks)
The three types of communication are:
1. **Verbal Communication**: Using spoken or written words to convey a message.
2. **Non-Verbal Communication**: Using body language, gestures, facial expressions, and other visual cues.
3. **Visual Communication**: Using images, graphics, and other visual aids to convey information.
#### 5) What are the types of verbal communication? (3 marks)
The types of verbal communication include:
1. **Interpersonal Communication**: Direct, face-to-face communication between two or more people.
2. **Public Speaking**: Communicating to a large audience through speeches or presentations.
3. **Written Communication**: Conveying messages through written words, such as letters, emails, and reports.
#### 6) Describe visual communication and its perspective. (5 marks)
Visual communication is the use of images, symbols, charts, graphs, and other visual aids to convey information and messages. It includes everything from drawings and photographs to digital media and infographics. Visual communication is effective because it can quickly convey complex information, make data more accessible, and enhance understanding through visual representation.
From a perspective viewpoint, visual communication allows for multiple interpretations depending on the viewer's cultural background, experiences, and context. It is powerful in attracting attention, aiding memory retention, and simplifying complex concepts. However, its effectiveness depends on the clarity of the visuals and the relevance to the audience.
#### 7) Name any 2 barriers to effective communication. (1 mark)
Two barriers to effective communication are:
1. **Language Differences**: Misunderstandings due to different languages or jargon.
2. **Noise**: Physical noise or distractions that interrupt the transmission of the message.
#### Or
#### What are the advantages and limitations of oral communication? (1 mark)
**Advantages:**
- Immediate feedback
- Personal touch and clarity through tone and expressions
**Limitations:**
- No permanent record
- Can be misunderstood if not clear
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**Note**: Ensure that the questions are answered within the provided marks to manage the time effectively during the test.