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Car travel 10km in 5 minutes find the speed of car in m/s

Posted by Neeta Kadam 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Formula for perimeter of circular base

Posted by Adarsh Agarwal 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

We know the formula to find the perimeter of the circle if the diameter is given, namely π D. Substitute the diameter 4.4 and Pi value as 3.14 in the above formula. Therefore 13.82 cm is the perimeter of the given circle.

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Show 3+√2.6 on no. Line

Posted by Kashika Khuranaa.. ? 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Factorize x^3+7x^2+14x+15

Posted by Aman Gupta 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Show 3+ 2.6 square root

Posted by Madhvi Sehgal 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Kashika Khuranaa.. ? 6 years, 6 months ago

Firstly draw √2.6 on no. Line and then draw +3 units on same no line

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Draw the graph of linear equations (4x *3y=36) From the graph find the value of Y. When X=8 Find the value of X when Y=6

Posted by Thansadebbarma 415 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Simplify√11 on the number line

Posted by Anaya Antil 6 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Kashika Khuranaa.. ? 6 years, 6 months ago

Step 1- by pythagoreas H sq =psq+bsq H. =√7sq +2sq Hsq = 7+4 Hsq =11 H=√11 Now take7as perpendicular and as base Now you can draw it on no. Line

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Madhvi Sehgal 6 years, 6 months ago

But can't have the send option for pictures

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Madhvi Sehgal 6 years, 6 months ago

I have the answer

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Aditya has built a cubical water tank with lid, for his house, with each outer edge 1.5m long. He gets the outer surface of tank excluuding the base, covered with square tiles of 25 cm. Find how much he would spend for tiles, if the cost of tiles is Rs480 per dozen.

Posted by Rajbeer Kaur 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Each edge of tank = 1.5 m = 1.5{tex}\times{/tex} 100 cm = 150 cm
Area of five faces of the tank = 5 (side)² = 5a² = 5 (150 cm)² = 5 (22500) = 1,12,500 cm²
Area of a square tile = 25 cm {tex}\times{/tex} 25 cm = 625 cm²
Number of tiles required = {tex}\frac{Area \ of \ five \ walls}{Area \ of \ a \ tile}{/tex} = {tex}\frac{1,12,500 }{625}{/tex} = 180 tiles ={tex}\frac{180}{12}{/tex}dozen
Cost of one dozen of tiles = ₹ 480
{tex}\Rightarrow{/tex}Cost of {tex}\frac{180}{12}{/tex}dozen tiles = ₹480{tex}\times{/tex}{tex}\frac{180}{12}{/tex}= ₹ 7,200
Hence the cost of total tiles required for tank is ₹ 7,200

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A closed iron tank 12mlong, 9m wide, and4 deep is to be made . Determine the cost of iron sheet used at the rate of RS5 PER METRE,THE SHEET BEING 2m wide

Posted by Rajbeer Kaur 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

For tank : l = 12 m, b = 9 m, h = 4 m
∴ Total surface area of the tank = 2(l × b + b × h + h × l)
= 2(12 × 9 + 9 × 4 + 4 × 12)
= 2(108 + 36 + 48)
= 2(192) = 384 m²
Width of the iron sheet = 2m
∴ Cost of the iron sheet = {tex}{384\over2}*5{/tex} = Rs. 960

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Locate each number root 5 ,root 3 and root 2 in a real line

Posted by Himanshu Chaudhary 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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What is irrational ?

Posted by Rudra Sen Singh 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Sia ? 6 years, 6 months ago

Numbers that are not expressible as a ratio of two integers, and having an infinite and non-recurring expansion when expressed as a decimal. Examples of irrational numbers are the number π and the square root of 2.

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(X+20) (2x+12) (2x+20)(2x+13)

Posted by Deepa Lunthi 6 years, 6 months ago

CBSE > Class 09 > Mathematics

2 answers

Kashika Khuranaa.. ? 6 years, 6 months ago

8xsq+1912xsq+62400

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Kashika Khuranaa.. ? 6 years, 6 months ago

8xsq+312x+1600x+62400

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Chapter polynomial

Posted by Ranjana Thakur 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Divide(x) by g(x) and verify the remainder f(x)=x to the power 3+4x to the power 2 -3x-10,g(x)=x+4

Posted by Syed Sohail 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Evaluate or simplify 1. (64/25) power -3/2

Posted by Shiva Gangwar 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Pie is defined as the ratio of the circumference (say c) of circle to its diameter (say d) that is pie=c/d this seems to contradict the fact that pie is irrational how will you resolve this contradiction .

Posted by Swapnil Shinde 6 years, 6 months ago

CBSE > Class 09 > Mathematics

3 answers

Swapnil Shinde 6 years, 4 months ago

How we can prove that one have only mid point

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Kashika Khuranaa.. ? 6 years, 6 months ago

Circumference of circle=2πr So,C=2×π×d/2 Now ,solve the eq That 2&2are cancelled So ,c=π×d C/d =π Hence ,prooved

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Sia ? 6 years, 6 months ago

We know that when we measure the length of a line or a figure by using a scale or any device, we do not get an exact measurement. In fact, we get an approximate rational value. So, we are not able to realize that either circumference (c) or diameter(d) of a circle is irrational. Therefore, we can conclude that as such there is not any contradiction regarding the value {tex}\pi{/tex} of and we realize that the value of {tex}\pi{/tex} is irrational.

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If 5+2√3÷7+4√3=k-6√3 find the value of k

Posted by Kashika Khuranaa.. ? 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 6 years, 6 months ago

LHS = (5+2√3)/(7+4√3)
= [(5+2√3)(7-4√3)]/[(7-4√3)(7+4√3)]
=[35-20√3+14√3-24]/[7²-(4√3)²]
=[11-6√3]/[49-48]
=11-6√3
therefore
11 - 6√3 = a + b√3
Compare both sides
a= 11, b= -6

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Find 4 rational numbers between 1/2 and 1

Posted by Shiva Gangwar 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Kashika Khuranaa.. ? 6 years, 6 months ago

6÷50 ,7÷50,9÷50,10÷50,12÷50

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Find 1 rational number between 2 and 3

Posted by Shiva Gangwar 6 years, 6 months ago

CBSE > Class 09 > Mathematics

2 answers

Kashika Khuranaa.. ? 6 years, 6 months ago

2/1×2=4/2 3/1×2=6/2 1rational no btw 2&3 is 5/2

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Yogita Ingle 6 years, 6 months ago

The are infinite rational number best one to find is their mid value.
So (2 + 3/2) = 5/2

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X + 1 do long division method X 73 +

Posted by Payal Bhuria 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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35+69

Posted by Balbir Singh 6 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

104

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Write in ascending order 6√6, 3√7 and 4√8

Posted by Pranathi B 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Sia ? 6 years, 6 months ago

6✓6 = 14.69
3✓7 = 7.93
4✓8 = 11.31
ascending order is. 3√7, 4√8,and 6√6

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Represent on number line A. 4.8662 B. 0.00026 C. 5.678

Posted by Ashmeet Sandhu 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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A father is three times as old as his son 12 years his father age will be twice as that of the alage of his son find their present age

Posted by Sohan Pal 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Sia ? 6 years, 6 months ago

Let x be the current age of the son.

Son = x, Father = 3x

In 12 years

Son = x + 12, Father = 2(x+12) “OR” 3x + 12

2(x + 12) = 3x + 12
2x + 24 = 3x + 12
24 - 12 = x

Therefore, current age of son is 12, and father is 36.

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Chapter 2 Polynomials

Posted by Baljit Kaur 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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What is aqueous and non aqueous solution also give one example of each

Posted by Rama Chandra Behera 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Tripti Rawat 6 years, 6 months ago

An aqueous solution is a solution in which water is the solvent. A NaCl solution is an aqueous solution.
A non-aqueous solution is a solution in which water is not the solvent. Examples of non-aqueous solutions are solutions used in dry cleaning (a solution of ethene in the solvent dichloromethane).

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Find 10 rational between10and25

Posted by Anubhav Maurya 6 years, 6 months ago

CBSE > Class 09 > Mathematics

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Ayush Raj Sinha 6 years, 6 months ago

Let x=10 and y=25 Then y-x/n+1 25-10 /10+1 15/11 Ten rational number are (X+d) (x+2d) (x+3d) (x+ 4d) (x+5d) (x+6d) (x+7d) (x+8d) (x+ 9d) (x+10d) (10+25/11), (10+2×25/11,,(10+3×25/11),(10+4×25/11),(10+5×25/11),(10+6×25/11),(10+7×25/11),(10+8×25/11),(10+9×25/11),(10+10×25/11 No. are (135/11),(160/11),(185/11),(235/11),(260/11),(285/11),(335/11),(360/11),(385/11),(435/11)

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Write two non-terminating&nor-reapting decimal no. Between √2 & √3 Plzz say me fast any one plzz

Posted by Saswat Kumar Choudhury 6 years, 6 months ago

CBSE > Class 09 > Mathematics