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Chapter 7 have these theorems:- 1.the angles opposite to two equal sides of triangle are also equal. The another theorem is just vise versa of theorem 1:- 2.the sides just opposite to two equal angles are also equal. (?these theorems are only for isosceles triangle termed as isosceles triangle property ?) Now, third theorem is ~sum of any two sides should be greater than third side then the then only the triangle can constructed.

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Find the value of 'K' :- 5x+8y=k X=6,y=4

Posted by Vikas Chauhan 5 years, 2 months ago

CBSE > Class 09 > Mathematics

7 answers

Abhay Choudhary 5 years, 2 months ago

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R Ajit 5 years, 2 months ago

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Sharsh Jain 5 years, 2 months ago

5×6+8×4=k 30+32=k 62=k

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Anjali Arya 5 years, 2 months ago

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Vicky Chouhan 5 years, 2 months ago

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Piyush Chaudhary 5 years, 2 months ago

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Shreyas Kulal 5 years, 2 months ago

5x+8y=k 5(6)+8(4)=k (by putting x=6&y=4) 30+32=k 62=k

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can you tell me simple tecnique of spillting the middole term

Posted by Divyanshu Bailwal 5 years, 2 months ago

CBSE > Class 09 > Mathematics

3 answers

Divyanshu Bailwal 5 years, 2 months ago

Yuvika Mourya plz tell

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Yuvika Mourya 5 years, 2 months ago

Let's take example first :y^2+9y+20;Now, split third term I mean take two values whose product is 20 and sum is 9y:-so,we can say that , 2y and 10y are 20 but there sum isn't 9y. Now again try, you can take here 4y and 5y whose sum is 9y. Now, A.T.Q:-y^2+9y+20=y^2+4y+5y+20?now factorise. You will get y(y+4)+5(y+4), so take out the common you will get your answer that is (y+4)(y+5).

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Yuvika Mourya 5 years, 2 months ago

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A^4+A^2+5

Posted by Purushothaman Jayalakshmi 5 years, 2 months ago

CBSE > Class 09 > Mathematics

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root 8 +2root2

Posted by Naavya Choudhary 5 years, 2 months ago

CBSE > Class 09 > Mathematics

5 answers

Simran Kaur 5 years, 2 months ago

4√2

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Krishna Sharma 5 years, 2 months ago

4root2

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Abhay Choudhary 5 years, 2 months ago

2root 10

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Anjali Arya 5 years, 2 months ago

4√2is Right answer.

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Sushant Katal 5 years, 2 months ago

10root2

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Write the complement of (90-a).

Posted by Hariom Dalal 5 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 2 months ago

{tex}{a^0}{/tex}

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1,2,3 ,4,5............25

Posted by Gyan Ji Mordhaya 5 years, 2 months ago

CBSE > Class 09 > Mathematics

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65*96

Posted by Harshit Jain 5 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Navya Sree 5 years, 2 months ago

6240

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in triangle abc and triangle pqr angle a 1 is equal to angle q and angle b is equal to angle r which side of triangle pqr should be equal to side a b of triangle ABC so that two triangles are congruent give reason for your answer

Posted by Radhika Garg 5 years, 2 months ago

CBSE > Class 09 > Mathematics

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if the length of a median of an equilateral triangle is x cm, then find it's area

Posted by Vinayak Kumar 5 years, 2 months ago

CBSE > Class 09 > Mathematics

2 answers

Gaurav Seth 5 years, 2 months ago

Solution:

In an equilateral triangle, the height and the median are considered to be of same length. Hence we can say that, Height of an equilateral triangle is equal to Median of the same equilateral triangle.

We know that, can be calculated as: