ICSE & ISC > Class 09 > Mathematics | CBSE Board | Homework Help

volume of a cube = side times side times side.since each side of a square is the same, it can simply be the length of one side cubed.If a square has one of 4 inches,the volume would be 4 inches times 4 inches times 4 inches ,or 64 cubic inches.(cubic inches can also be written in 3.

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What is fraction define

Posted by Hami Khan 3 years, 7 months ago

ICSE & ISC > Class 09 > Mathematics

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Sia ? 3 years, 7 months ago

A fraction represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.

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Measurements of dimensions of the classroom and find the cost of weight washing at rate of 65persqm . (1). Measurment of length breadth and height of the classroom. (2). Numbers of windows and door and their measured. (3). Find the cost of making window and door as per the ₹105persqm. For windows there are given as Length=3_9inches. Breadth=2_5inches. For door there are given as Length =6_5inches. Breadth=7_5inches. For room there are given as Length=16_8inches. Breadth=15_8inches. Height=15_7inches.

Posted by Abinash Sapkota 3 years, 10 months ago

ICSE & ISC > Class 09 > Mathematics

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The centroid of a triangle formed by the lines x=0,y=0 and x+y=6 is

Posted by Bandlmudi Hemanth 3 years, 11 months ago

ICSE & ISC > Class 09 > Mathematics

1 answers

Yogita Ingle 3 years, 11 months ago

Solve the line x=0,y=0 and x+y=6 by taking two at a time

We get the vertices of the triangle as (0,0),(6,0) and (0,6)

Hence the centroid of the triangle is [(x₁+x₂+x₃)/3 ,(y₁+y₂+y₃)/3] =( 6/3 , 6/3)=(2,2)

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At what rate per cent compound interest, does a sum of money become 1-44 times of itself in 2 years ?

Posted by Shivam Agrawal 4 years, 1 month ago

ICSE & ISC > Class 09 > Mathematics

2 answers

Veerayya Swamy Veerayya Swamy 3 years, 8 months ago

20 %

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Gaurav Seth 4 years ago

If a sum of money compounded annually becomes 1.44 times of itself in 2 years, then the rate of interest per annum is

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20%

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An isolences right tringle area 8cm2 find the length hypotenuse

Posted by Purav Chauhan 4 years, 1 month ago

ICSE & ISC > Class 09 > Mathematics

3 answers

Prem Bahadur 3 years, 9 months ago

Thank you for your answers

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Yogita Ingle 4 years, 1 month ago

Given, area of an isosceles right triangle = 8 cm²
Area of an isosceles triangle = 1/2 (Base x Height)
⇒ 8 = 1/2 (Base x Base)
[∴ base = height, as triangle is an isosceles triangle]
⇒ (Base)2 =16 ⇒ Base= 4 cm

In ΔABC, using Pythagoras theorem
AC² = AB² + BC² = 42 + 42 = 16 + 16
⇒ AC² = 32 ⇒ AC = √32 cm
[taking positive square root because length is always positive]
Hence, the length of its hypotenuse is √32 cm.

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Purav Chauhan 4 years, 1 month ago

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Find the co ordinates of a point which is reflection of (-1,2)in the axis also find the (1-2)

Posted by Avishek Harijan 4 years, 1 month ago

ICSE & ISC > Class 09 > Mathematics

2 answers

Rohit 10A 4 years, 1 month ago

NCERT class 9 9 bio chapter number tissue exercise aur exercise

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Shiva Sangeet Shiva 4 years, 1 month ago

Nnkk

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P,q ajugma p+q jugma proved class 9

Posted by Jagannath Pahi 4 years, 1 month ago

ICSE & ISC > Class 09 > Mathematics

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a/b=b/c prove that (a+b+c) (a-b+c)

Posted by Aditya Shukla 4 years, 2 months ago

ICSE & ISC > Class 09 > Mathematics

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दीदी

Posted by Ritik Parmar 4 years, 2 months ago

ICSE & ISC > Class 09 > Mathematics

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Which is not the solution of X-Y=O

Posted by Sweet Heart Jigar 4 years, 3 months ago

ICSE & ISC > Class 09 > Mathematics

2 answers

Abu Hamza 3 years, 8 months ago

1+1 or o+1 etc.

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Rohit Rawat 4 years, 2 months ago

2+2

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2+x^2+x

Posted by Prajwal Pt Pt 4 years, 3 months ago

ICSE & ISC > Class 09 > Mathematics

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Prajwal Pt Pt 4 years, 3 months ago

=(2+x)(x+x) =2x - x^2 =1

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Factorize using identity: a) 27x³+ 125³ b) 9x²+6xy+y² c) 27x³+y³+ z³-9xyz

Posted by Deepanshu Kumar Garg 4 years, 4 months ago

ICSE & ISC > Class 09 > Mathematics

2 answers

Sartaj Ahmad 4 years, 3 months ago

(a) 27x³+ 125³ =(3x)³+ 5³ =(3x+5) {(3x)²+ 5²-(3x)(5)} =(3x+5)(9x²+ 25-15x) (b) 9x²+6xy+y² =(3x)²+2(3x)(y)+y² =(3x+y)² (c) 27x³+y³+ z³-9xyz =(3x)³+(y)³+ (z)³-3(3x)(y)(z) =(3x+y+z){(3x)²+y²+y²-3xz-yz-3xz)} =(3x+y+z(9x²+y²+y²-3xz-yz-3xz)

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Deepanshu Kumar Garg 4 years, 4 months ago

Help

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1+1

Posted by Rishita Singh 4 years, 4 months ago

ICSE & ISC > Class 09 > Mathematics

3 answers

Ramanand Baghel 4 years, 3 months ago

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Rishita Singh 4 years, 4 months ago

Respiration is a process______to photosynthesis

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Prem Lata 4 years, 4 months ago

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Trignometry ratio

Posted by Annu Agrawal 4 years, 4 months ago

ICSE & ISC > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 4 months ago

It is defined as the values of all the trigonometric function based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with respect to any of its acute angles are known as the trigonometric ratios of that particular angle.

sine: Sine of an angle is defined as the ratio of the side opposite(perpendicular side) to that angle to the hypotenuse.
cosine: Cosine of an angle is defined as the ratio of the side adjacent to that angle to the hypotenuse.
tangent: Tangent of an angle is defined as the ratio of the side opposite to that angle to the side adjacent to that angle.
cosecant: Cosecant is a multiplicative inverse of sine.
secant: Secant is a multiplicative inverse of cosine.
cotangent: Cotangent is the multiplicative inverse of the tangent.

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How's herons formula work

Posted by Dev Saluja 4 years, 4 months ago

ICSE & ISC > Class 09 > Mathematics

1 answers

Abu Hamza 3 years, 8 months ago

It works when the triangle have not given its altitude but given its side.

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Statistics

Posted by Satyam Kumar 4 years, 5 months ago

ICSE & ISC > Class 09 > Mathematics

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Meghna Thapar 4 years, 5 months ago

Statistics is a form of mathematical analysis that uses quantified models, representations and synopses for a given set of experimental data or real-life studies. Statistics studies methodologies to gather, review, analyze and draw conclusions from data. The two main branches of statistics are descriptive statistics and inferential statistics. Both of these are employed in scientific analysis of data and both are equally important for the student of statistics.

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Ex 7.2

Posted by Ankit Sahu 4 years, 5 months ago

ICSE & ISC > Class 09 > Mathematics