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Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

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Q1. In a school function, students having 100% attendance are to be honoured. Class teacher of IX A gives the number of eligible students asValue-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9 whereas the class teacher of IX B gives the number of such students as Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9 If both the above numbers are equal then

(i) Find the number of prize-winners of 100% attendance in each section of class IX.
(ii) Which mathematical concept is used in the above problem?
(iii) By honouring 100% attendance holders, which value is depicted by the school administration?

(i) Number of eligible students of class IX A

= Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Number of eligible students of class IX B Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Since, the number of eligible students in both sections are equal.

Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Thus, in each section number of eligible students = 8
(ii) Number system.
(iii) Regularity.


Q2. Ravita donated Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9 to a blind school. Her friends wanted to know the amount donated by her. She did not disclose the amount but gave a hint thatValue-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9
(i) Find the amount donated by Ravita to the blind school.
(ii) Which mathematical concept is involved in this problem?
(iii) By donating an amount to blind school, which value is depicted by Ravita?

(i) ∵ Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9

Thus, the amount donated by Ravita is Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9 322.
(ii) Polynomials.
(iii) Charity.

 

Q3. A group of (a + b) teachers, (a+ b2) girls and (a3 + b3) boys set out for an ‘Adult Education Mission’. If in the group, there are 10 teachers and 58 girls then:
(i) Find the number of boys.
(ii) Which mathematical concept is used in the above problem? 

(iii) By working for ‘Adult Education’, which value is depicted by the teachers and students?

(i) ∵ (a + b)2 = a2 + b+ 2ab
∴ 102 = 58 + 2ab                   [∵ Number of teachers = (a + b) = 10 and Number of girls = (a2 + b2) = 58]
⇒ 100 = 58 + 2ab
⇒ 2ab = 100 – 58 = 42
⇒ ab = 42/2
 = 21
Now, (a + b)3 = a3 + b3 + 3ab (a + b) ∴
(10)= a3 + b3 + 3 * 21 * 10
⇒ 1000 = a+ b+ 630 a+ b3 = 1000 – 630 = 370
∴ Number of boys = 370.
(ii) Polynomials.
(iii) Social upliftment.

The document Value-Based Questions: Polynomials - Notes | Study Mathematics (Maths) Class 9 - Class 9 is a part of the Class 9 Course Mathematics (Maths) Class 9.
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