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  • 3 answers

Baap Of All. 6 years, 10 months ago

Too simple yaar A.p. is in form of 1,2,3....100 where d is 1 Here last term (l) is 100 a=1 N=100 Sum of all natural number =n÷2×(a+l) 100÷2×(1+100) 50×101 =5050

Affu 😊 6 years, 10 months ago

5050

Akash Singh 6 years, 10 months ago

5050
  • 1 answers

Kiara D'Cruz 6 years, 10 months ago

This is ncert problem man find the solution in this app
  • 2 answers

Affu 😊 6 years, 10 months ago

I/2

Sushil Kumar 6 years, 10 months ago

9-6k-6=0 3-6k=0 -6k=-3 K=1/2
  • 1 answers

Pavitra Narayanan 6 years, 10 months ago

Answer is 25 cm by Pythagoras theorem
  • 4 answers

✨Raagini ?? 6 years, 10 months ago

ABC is an equilateral triangle , where D point on side BC in such a way that BD = BC/3 . Let E is the point on side BC in such a way that AE⊥BC . Now, ∆ABE and ∆AEC ∠AEB = ∠ACE = 90° AE is common side of both triangles , AB = AC [ all sides of equilateral triangle are equal ] From R - H - S congruence rule , ∆ABE ≡ ∆ACE ∴ BE = EC = BC/2 Now, from Pythagoras theorem , ∆ADE is right angle triangle ∴ AD² = AE² + DE² ------(1) ∆ABE is also a right angle triangle ∴ AB² = BE² + AE² ------(2) From equation (1) and (2) AB² - AD² = BE² - DE² = (BC/2)² - (BE - BD)² = BC²/4 - {(BC/2) - (BC/3)}² = BC²/4 - (BC/6)² = BC²/4 - BC²/36 = 8BC²/36 = 2BC²/9 ∵AB = BC = CA So, AB² = AD² + 2AB²/9 9AB² - 2AB² = 9AD² Hence, 9AD² = 7AB² ????

Shruti Gupta 6 years, 10 months ago

Search it in rs agarwal examples it is given their

Sneha Singh?????? 6 years, 10 months ago

U can check it on this appp it's given in ncert solutions

Sneha Singh?????? 6 years, 10 months ago

It's tooo long
  • 2 answers

Affu 😊 6 years, 10 months ago

TanA= CotB , TanA= Tan(90-B) , A=90-B , A+B=90

Sneha Singh?????? 6 years, 10 months ago

Tan A = tan ( 90-B ). = A = 90- B ......... = A+ B = 90
  • 3 answers

Ahmad Farooqui 6 years, 10 months ago

Then A+B=90

Yukti Arora 6 years, 10 months ago

There is something missing..plz check it again

Kiara D'Cruz 6 years, 10 months ago

Incomplete question
  • 2 answers

Yukti Arora 6 years, 10 months ago

Ncert ques ch 6 ex 6.5 .....go for ncert solutions

Armandeep Singh 6 years, 10 months ago

firstly draw AB by supposing its height =3000m then mark 2 angles of elevation 45 degree then 60 degree behind that . Then apply trignometric identities we will get the answer
  • 1 answers

Armandeep Singh 6 years, 10 months ago

square of hypotenuese is equal to the sum of square of its base and perpendicular
  • 5 answers

Sarvika Bhan 6 years, 10 months ago

Ensure that you have enough rough work space........and do rough work calculations neatly to avoid calculation errors (silly mistakes)

Steven Rogers 6 years, 10 months ago

Don't use black pens during examination Its good to write the whole paper using only one pen

Siddhartha Jain 6 years, 10 months ago

If possible then do solutions in series

Kiara D'Cruz 6 years, 10 months ago

Be fully prepared and calm during the exam

Siddhartha Jain 6 years, 10 months ago

Don't use whitner
  • 1 answers

Mayank ... 6 years, 10 months ago

Rs aggarwal ka saara example questions padh lo..... I guarantee you will score 70 marks... But when if you get it by your heart...
  • 5 answers

Pal Kamboj 6 years, 10 months ago

10 cm

Mehak Rathore 6 years, 10 months ago

In this we have used thereom the ratio of ares of 2 similar is equal to the square of there corresponding side

Mehak Rathore 6 years, 10 months ago

Ar?ABC\Ar?PQR = 9/4 9/4=(15^2/x^2) 9*225=4*x^2 2025= 4*x^2 2025/4=x^2 506.25=x^2 22.5=x So QR =22.5

Harsha Asiwal 6 years, 10 months ago

Qr is 10

Puja Sahoo? 6 years, 10 months ago

10cm
  • 1 answers

Siddhartha Jain 6 years, 10 months ago

Assume kro ki wo no. rational h aur us no. Ko 2 composite no. Ka factor proof kr do wo irrational ho jaega
  • 1 answers

Puja Sahoo? 6 years, 10 months ago

ap= a+(q-1)d.......(i) and aq=a+(p-1)d.....(ii) now, solve eq. i and ii yu will get, d=-1..... substitute the value in i or ii yu will get a=p+q-1..... now an=a+(n-1)d... put values of a and d
  • 7 answers

Friend Anjali Bisht 6 years, 10 months ago

Applying section formula (m1x2+m2x1/m1+m2,m1y2+m2y1/m1+n2) P=(4,m) A=(2,3) B=(6,-3) Let the ratio =k:1 P(4,m)=k(6)+1(2)/k+1,k(-3)+1(3)/k+1 Now,A.T.Q 4=6k+2/k+1 4(k+1)=6k+2 4k+4=6k+2 4-2=6k-4k 2/2=k 1=k Put the valu of k m=1(-3)+1(3)/1+1 m=-3+3/2 m=0/2 m=0 Tharefore the value of m = 0?

Vishnu Singh 6 years, 10 months ago

M=0 and ration will be 1:1 use section formula

Siddhartha Jain 6 years, 10 months ago

Ya m=0

Siddhartha Jain 6 years, 10 months ago

I mean ratio is 1:1

Shruti Choudhary 6 years, 10 months ago

By section formula on x we get k =1 and m=0

Siddhartha Jain 6 years, 10 months ago

I think k=1 and m=2

Paras Chauhan 6 years, 10 months ago

Please answer
  • 3 answers

Nafeeza Safreen 6 years, 10 months ago

I think after that eqn step 3x²-876x+3840

Siddhartha Jain 6 years, 10 months ago

xsq.-328x+1280=0

Siddhartha Jain 6 years, 10 months ago

Let speed of train be x. Now equation is. 480/x+480/x-8=3
  • 0 answers
  • 0 answers

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