CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

Area=a+b/2h where a is base , b is base and h is height. Properties: 1.Opposite sides are parallel. 2.Two pairs of adjacent angles is 180 degree. 3.The diagonals intersect. 4.Two non parallel sides are unequal.

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In a cricket match, a batswomen hits a boundry 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary

Posted by Ayan Malik 6 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Harshit Garg 6 years, 3 months ago

24/30

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Veera Sharma 6 years, 3 months ago

4/5 after cancelation

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Mohit Agrawal 6 years, 3 months ago

24/30

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Kaushal Bisht 6 years, 3 months ago

24/30 out of 6 hits

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Himanshu Mj 6 years, 3 months ago

24/30 =12/15=4/5is answer

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Who likes math?

Posted by Ꮆ ꫝᗰᎥᮘᎶ• 『乙ΞᗫꫝI』 6 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

X3+y3+z3+-3xyz,

Posted by Mahi Sawariya 793 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Mahi Sawariya 793 6 years, 3 months ago

X3+y3+z3-3xyz=0.

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Mohak Shah 6 years, 3 months ago

Question is wrong

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Therom 6.6

Posted by Manish Saini 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Abhishek Swami 6 years, 3 months ago

Of which chapter

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An equilateral triangle of side 9cm is in inscribed in a circle find the radius of the circle ?

Posted by Alekh Palei 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Pruthvi Sonpal 6 years, 3 months ago

9 cm

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ANSWER

Important theorem of chapter 6?

Posted by Prince Singh 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Kaushal Bisht 6 years, 3 months ago

If equal are added to equal that whole are equal

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a³-b³+1+3ab. Factorise

Posted by Shivani Aagrwal 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Mahi 12 6 years, 3 months ago

= a³ + ( - b )³ + 1³ - 3 × a × ( - b ) × 1 = [ a+(-b)+1 ][a²+(-b)²+1²-a(-b)-(-b)1-1×a] = ( a - b + 1 ) ( a² + b² + 1 + ab + b - a )

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√2+√2+√2+√2=5 prove that

Posted by Duggu Saini 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Mohak Shah 6 years, 3 months ago

The Answer is not exect 5 It is 5.65685425 By Value of √2=1.41 (approx) Add 1.41+1.41+1.41+1.41=5.64 (approx)

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The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m. Find its area

Posted by Suraj Pahari 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

M S 6 years, 3 months ago

3x+5x+7x=300m 15x=300m x= 20m a=3x=60 b=5x=100 c=7x=140 s=p/2=300/2=150 ar= √s(s-a)(s-b)(s-c) =√150*150-60*150-100*150-140 =√150*90*50*10 =1500√3m²

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Bibhor Puhan 6 years, 3 months ago

Its easy.First you have to take 3x+5x+7x equal to 180 degree.then you to find the value of x.Then you have to find the sides of the triangle by multiplying 3,5,7 to the value of x.By using heron formula you can find the area of the triangle

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factorise : x^3 + 4x^2 + x - 6

Posted by Vrushti Doshi 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

M S 6 years, 3 months ago

p(x)=x³+4x²+x-6 integral factors of 6 are +/-1,+/-2,+/-3,+/-6 mentally calculate which would fit here we'll get maximum 3 numbers that'll fit which are 1, -2,-3 so by above we get the factors (x-1)(x+2)(x+3)

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Saksham Mehrotra 6 years, 3 months ago

Divide this polynomial by( x-1) by long division method; as (x-1) is the factor of the given polynomial

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Bionomoal of 50 degree

Posted by King Of King 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Rajnish Kumar Singh 6 years, 3 months ago

5*+5*

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Saksham Mehrotra 6 years, 3 months ago

x^50 +1

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P(E)+P(notE)

Posted by Yugal Rathi 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Saksham Mehrotra 6 years, 3 months ago

0Thank You

ANSWER

Insert an irrational number between 2and 3

Posted by Kamna Tyagi 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

M S 6 years, 3 months ago

2.45455455545555...

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Saksham Mehrotra 6 years, 3 months ago

2.5

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Solve Mid point theorem

Posted by Kanishka Kamboj 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Zain Rehaan 6 years, 3 months ago

in a triangle mid point of first side is joined to mid point of second side, the it is parallel to third side.

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ABC is a tringle and D is any point in its interior. Show that BD+DC<AB+AC

Posted by Urvashi Bhatia 6 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

M S 6 years, 3 months ago

question is incomplete

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Are there any trick to solve Prove that questions''

Posted by Exclusivegamer Nishant 6 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

M S 6 years, 3 months ago

whatever is asked try to solve it in the opp way like is PQR=1/2(TRS+SER) so first try to solve what is given like here if you move half to the other side it become 2PQR=TRS+SER now you know you have to find PQR in two ways and you'll arrive at your answer

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Kanishka Kamboj 6 years, 3 months ago

Yes , first understand the question then solve

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What is under root

Posted by Ashok Ojha 6 years, 3 months ago

CBSE > Class 09 > Mathematics