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Which of these numbers is a rational number but not whole number a)_2 b) 3.5 c)√16 d)0

Posted by Manikanta A 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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Bhumesh Garg 2 years, 4 months ago

B) 3.5

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Splitting middle term 4×^2-13×+10

Posted by Aman Sharma 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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x^3+13^2+32×+20

Posted by Rashi Punjabi 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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Factorise: (2y + x) ^ 2 * (y - 2x) + (2x + y) ^ 2 * (2x - y)

Posted by Abhi Singh 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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Represent each of the following rational numbers on the number line 1,5/7

Posted by Pranav Sai 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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Bvh

Posted by Katta Bhavith Bhavith 2 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Tharun Kumar 2 years, 4 months ago

Chapter 1

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Represent 5 on number line and explain

Posted by Jesu Raj 2 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Namasvi Chouhan 2 years, 4 months ago

consider an integer 5. We can express 5 as the sum of squares of two numbers. So, we have 5 = 2² + 1² ⇒ (√5)2 = 2² + 1² The above equation follows the Pythagoras theorem with √5 as the hypotenuse, 2 and 1 as the other two sides of the right triangle respectively. This shows that we need to construct a right triangle with sides 2 units and 1 units so that the hypotenuse becomes √5 units on the number line. Observe the figure and the steps given below to represent root 5 on the number line. Let us see how to draw root 5 on number line. Step 1: On the number line, take 2 units from 0 and represent this point as A. Therefore, segment AB = 2 units Step 2: At point B, draw a perpendicular and mark C such that BC = 1 unit. Join A to C. Using the Pythagoras theorem, we can see that AC is the hypotenuse because ABC is a right-angled triangle and the side opposite to the right angle is the hypotenuse. In △ABC, using Pythagoras theorem, we have AC² = AB² + BC² = 2² + 1² = 5 ∴ AC = √5 units Step 3: Now, with A as the center and AC as radius, draw an arc of radius AC to cut the number line at D. Since AC = AD, point D represents √5 on the number line. Since, AC = AD = √5 units, therefore, point D reprline. So, we learnt how to draw root 5 on number line. In this way, we can also locate root 5 on number line.

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Mehak Kaur 2 years, 4 months ago

Sir math ka holiday homework send krdoo answer maa

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Mehak Kaur 2 years, 4 months ago

Hlo

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If x=1/2-√3 Then solve x³-2x²-7x+5

Posted by Samruddhi Solanki 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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If x=1/2-√3 Then solve x³-2x²-7x+5

Posted by Aaditya Malhan 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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2x-5ycube +5y-3zcube+3z-2xcube

Posted by Ritu Jain 2 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Ritu Jain 2 years, 4 months ago

Please answer

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If a is a positive rational number and n is a positive integer greater than 1,then for what value of n,a is a rational number?

Posted by Aman Preet Singh 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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The point lies on (2‚3) the graph O equation 3x - (a-1) is it why is it was to 2A - 1 if the same point also lies on the graph of linear equation 5x +(1-2a)y=3b ‚ find the value of b

Posted by Nirmala Mankar 2 years, 4 months ago

CBSE > Class 09 > Mathematics

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EXERCISE 12.1 1. A traffic signal board indicated SCHOOL AHEAD,is an equilateral triangle with side a. Find the area of the signal board,using heron's formula.If it's perimeter is 180cm what will be an area of the signal board?

Posted by Indushri Kulkarni 2 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Namasvi Chouhan 2 years, 4 months ago

Triangle have 3 sides let's take sides =a Sides = perimeter 3a = 180cm a = 180/3 a = 60 cm a=60 , b=60 , c=60 s=a+b+c/2 s = 180/2 s = 90 cm All are in square root √s(s-a)(s-b)(s-c) √90(90-60)(90-60)(90-60) cm² √90×30×30×30 cm² √30×3×30×30×30 cm² 30×30√3 cm² Answer is 900√3 cm²

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(3x-5y+4)(9x²+y²+z²-xy+yz+zx

Posted by Ravi K.R Sinha 2 years, 4 months ago

CBSE > Class 09 > Mathematics