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  • 2 answers

Shubham Saxena ???? 5 years, 2 months ago

I hope you understand.

Shubham Saxena ???? 5 years, 2 months ago

In completing the square method ,,,, For example = 2x² - 5x + 3 = 0 ,, so we need to remove coefficient 2 from x².,, Then ,, 2 ( x² - 5x/2 + 3/2 ) = 0 /2 = 0,, = x² - 5x/2 + 3/2 = 0 ,,,, Second step - x² - 5x/2 = - 3/2 ,, Third step - x² - 5x/2 + [ 5/2 ]² - [5/2 ]² = - 3/2 ,,,,use the formula of( a - b )². Forth step -[ x² - 5/4 ]² - [5/2]² = - 3/2,,,, =[ x - 5/4 ]² = - 3/2 +[ 5/2]²,, = [ x - 5/4]² = - 3/2 + 25/4,,,, = [ x - 5/4 ]² = - 24 + 25 / 16 =( [ x² - 5x/2]² = 1/16),,,,root of 16 is 4 then,,,, = x - 5/4 = ± root 1/4,,,, = Firstly take positive integer. + 1/4 . Then negative. - 1/4. x = 1/4 + 5/4 = 1 + 5 / 4 = 6/4 = 3/2 ,,= X = 2. = X = 2 . = x = - 1/4 + 5/4 = - 1 + 5 /4 = 4/4 = 1. = X = 1. [Answer is X =1 and X = 2 ],, Hence proved ,, It is not important because this method is deleted in syllabus Thank you,, Shubham Saxena
  • 2 answers

Shubham Saxena ???? 5 years, 2 months ago

Ok thanks sahil

Sahil Kumar 5 years, 2 months ago

Step deviations methad
  • 1 answers

Sahil Kumar 5 years, 2 months ago

Draw a perpendicular line where both ogives intersect each other.
  • 1 answers

Åsthå Åsthå 5 years, 2 months ago

Let Amit is standing at bottom of the building at B and observing the bird at C with angle of elevation 30o. It is assumed that given distance 200m is BC, the distance along line of sight We have,  ⇒  sin30o=BCCD​ ⇒  21​=200CD​ ⇒  CD=2200​ ⇒  CD=100m If Deepak is seeing the same bird at top of the building with an angle of elevation 45o, we have, ⇒  sin45o=ACCE​ ⇒  2​1​=ACCE​ ⇒  AC=2​CE ⇒  AC=(CD−DE)2​ ⇒  AC=(100−50)2​ ⇒  AC=502​ ⇒  AC=50×1.414  ⇒  AC=70.7
  • 3 answers

... Yang ... 5 years, 2 months ago

?Thirteen(13)? HoPe It HeLpS yOu??

Yashwant Yadav 5 years, 2 months ago

Can you understand Kavita????? Yes or no

Yashwant Yadav 5 years, 2 months ago

First two digit number which is divisible by 7 is 14 2nd - 21 ......... D =21-14= 7 last two digit number which is divisible by 7 is 98 So 98 = 14+(n-1)×7 =13 Answer
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  • 3 answers

Aniruddh Bhatnagar 5 years, 2 months ago

How

Ayush Kumar 5 years, 2 months ago

Only practice

Pratibha Kumari Kumari 5 years, 2 months ago

You will know by yourself by looking at the fig. Just learn the formulas as you learn (a+b)² and then apply the formulas the same way you can do
  • 2 answers

Souvig Saha 5 years, 2 months ago

2

Lucky Sharma 5 years, 2 months ago

Not possible
  • 5 answers

Shubham Saxena ???? 5 years, 2 months ago

Thanks souvig you are good ,, Welldone

Shubham Saxena ???? 5 years, 2 months ago

This is for answering 151

Shubham Saxena ???? 5 years, 2 months ago

Sorry,,your answer is wrong Answer is = formula ,, Sn = n/2 [ 2a + ( n-1) d] ,, = 100/2 [ 2 × 1 + ( 100-1 ) 1,, 50 [ 2 + 99 × 1 ] ,, 50 [ 101 ] ,, = 5050 . Ans,,,, hope you understand.

Souvig Saha 5 years, 2 months ago

a=1 d=1 l=100 Summation = 100/2(101) =5050

Deepika Sihag 5 years, 2 months ago

151
  • 1 answers

Shubham Saxena ???? 5 years, 2 months ago

Answer me if you have any answer.........
  • 3 answers

Shubham Saxena ???? 5 years, 2 months ago

Sorry ,, Your answer is right but sin and cosec is wrong.... Sin = 5/13 and cosec = 13/5 Thank you for your help.

Riddhesh Gujarathi 5 years, 2 months ago

Sin=5/12 tan=5/12 cos=12/13cot=12/5cossec=12/5

Manjeet Yadav 5 years, 2 months ago

Sin = 5/12, cos=12/13,tan=5/12,cot= 12/5, cosec= 12/5
  • 3 answers

Deepika Sihag 5 years, 2 months ago

No,x^2-2 is not a factor of x^4+x^3-2x-2.

Shubham Saxena ???? 5 years, 2 months ago

No x2-2 is not a factor of x4+x3-2x-2

Manjeet Yadav 5 years, 2 months ago

No
  • 2 answers

Deepika Sihag 5 years, 2 months ago

P(E) of getting number less than 7=6/6=1

Prothom Bose 5 years, 2 months ago

No. of favourable outcome=6 Total no. of outcomes=6 P(e)getting a no. less than 7 when a die is thrown =No. Of favourable outcomes÷total no. of outcomes P(e)=6÷6=1 ANSWER Hence probabilty will be 1
  • 1 answers

Souvig Saha 5 years, 2 months ago

Let, the fraction be x/y . A/Q, x+y=2y-3 | (x-1)=(y-1)/2 or, x=y-3 ----(i)| (y-4)=(y-1)/2 | 2y-8=y-1 | y= 7 Substituting value of y in equation (i) x=4 Therefore, the fraction is 4/7.
  • 2 answers

Souvig Saha 5 years, 2 months ago

Given , sin A = 3/5 We know, sin A= perpendicular /hyp. Therefore, P= 3 and H=5 Using Pythagoras theorem, H sq. = P sq. +B sq. or, 25 = 9 + B sq. or, B = 4 Therefore, cos A=B/H = 4/5 And, tan A = P/B = 3/4

Shubham Saxena ???? 5 years, 2 months ago

Use square trigonometric identity = cos2A + sin2A = 1 TanA = sinA/ cosA = 3/5/4/5 = 3/4.
5.3
  • 1 answers
Wt
  • 2 answers
I think that there is an error in ur question I think that we have to find the value of'k' not the roots... Btw the value of 'k' is 2.

Md Affan 5 years, 2 months ago

In asexual reproduction involves only single parent
  • 0 answers
  • 2 answers

Souvig Saha 5 years, 2 months ago

Sorry, the above answer is wrong. The line should be divided in the ratio 1:2 . The formula is the same. The answer should be (0,1).

Souvig Saha 5 years, 2 months ago

As the line segment is trisected, therefore, it is divided in the ratio 1:3. Following the section formula --- {1(-6)+3*3} /1+3 , {1*5+3(-1)}/1+3. are the points of trisection. Therefore, the points of trisection are : (3/4 , 1/2)
  • 1 answers

Aditya Kumar 5 years, 2 months ago

TanA =tanA TanA=tan(90-B) A=90-B A+B=90
  • 1 answers

... Yang ... 5 years, 2 months ago

?Which Chapter?
  • 2 answers

... Yang ... 5 years, 2 months ago

?Which Chapter?

Anjali Yadav Anjali Yadav 5 years, 2 months ago

In text questions
  • 1 answers

Ganesh Kumar 5 years, 2 months ago

In s ABC and AMP, we have, ABC = AMP =  [Given] BAC = MAP [Common angles]  By AA-criterion of similarity, we have ABC  AMP (ii) We have ABC  AMP [As prove above]  

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