CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

Let three are in AP are a-d,a,a+d. ATQ- a-d+a+a+d=3 3a=3 a=1 -eq-1 (a-d)*a*(a+d)=8 Put a=1 (1-d)*1*(1+d)=8 (1-d)(1+d)=8 1-d sq.=8 d=+- √7 Hence, 1-√7,1,1+√7

2Thank You

Aadya Singh ? 6 years ago

1 , (1+√7) and (1-√7)

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Lucifer ? Morningstar? 6 years ago

Or 1,1-√7,1-√7

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Lucifer ? Morningstar? 6 years ago

1,1+√7,1+2√7

1Thank You

ANSWER

Kya iss baar questions ncert k optional wala part se v aayega

Posted by Harsh Mishra 6 years ago

CBSE > Class 10 > Mathematics

5 answers

Harsh Mishra 6 years ago

Tq...

0Thank You

Khushi Kumari 6 years ago

Yes

1Thank You

? Queen ? 6 years ago

Yes!

3Thank You

Deep Singh 6 years ago

Hnn

3Thank You

Shreya ... 6 years ago

Ha..ncert se bhi ayega..

3Thank You

ANSWER

The number of bricks, each measuring 18*12*10 are required to build a 1 wall 12*0.6*4.5 if 1/10 of its volum e is taken by mortar,is A 13.3% B 21.1% C 30% D 33.1%

Posted by Deepanshu Sindhu 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that cot2 A[ Sec A-1/ 1+sin A] + sec2 A[SinA-1/ 1+ Sec A]= O [Hint: cotA= cos A/ sin A and secA=1/ cos A ]

Posted by ❤ Suhani ❤ 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Prove that Cot²Acosec²B-cot²Bcosec²A=cot²A-cot²B

Posted by Priyanshu Avishi 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If acos@-bsin@=c then asin@+bcos@=?

Posted by Vishrut Bharti 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Sin90+Cos60=?

Posted by ?Urstruley Ashu? 6 years ago

CBSE > Class 10 > Mathematics

4 answers

Deep Singh 6 years ago

1 +1/2 =2+1/2 =3/2

1Thank You

Khushi Kumari 6 years ago

3/2

0Thank You

Prmod Singh 6 years ago

1+ 1/2 = 3/2

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Sumit Kumar Rohan 6 years ago

1+1/2=3/2

6Thank You

ANSWER

Mujhe chapter 3 ka 3.2 ka pahla sab Samajh Mein Nahin a raha hai YouTube per aur uska graph Kaise nikalte vah Bhi Nahin Aata Hai please aap meri help kijiye

Posted by Bhavik Rajput 6 years ago

CBSE > Class 10 > Mathematics

4 answers

Rani Mishra ??? 6 years ago

But byjus requires subscription which is very expensive. Frankly speaking I am a user of byjus and faced this type of problem.

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Deep Singh 6 years ago

Exercise 3.2 question no. 1(1) Let the number of boys be x And the number of girls be y A/q Total number of student =10 x + y =10-------------(1) If the no. Of girls is 4 more than the boys x+4=y y-x=4--------------(2) On adding (1) and (2) 2y = 14 y =7. Putting value of y in eq. 1,we get, x+y=10 =>x+7=10 therefore x=3

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Sumit Kumar Rohan 6 years ago

Go to byjus for it

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Mohd. Afzal Afzal 6 years ago

2Thank You

ANSWER

Use euclid division algorithim to find the h.c.f of 441,567,693

Posted by Anmol Srivastava 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Aadya Singh ? 6 years ago

HCF= 63.

2Thank You

ANSWER

Show that square of any positive integers is either of the from 4q or 4q+1 for some integers q

Posted by Anmol Srivastava 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Prmod Singh 6 years ago

Let a any positive integer and q is divisor and r is remainder Where r 0,1,2,3 Where r -0 a= 4q+r a=4q+0 a=4q Where r- 1 a=4q+1 Where r-2 a=4q+2 Where r-3 a=4q+3

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ANSWER

I have chapters 3 Ex 3.2 Question no 1 graphs solutions

Posted by Bhavik Rajput 6 years ago

CBSE > Class 10 > Mathematics

8 answers

Deep Singh 6 years ago

Equation - x+y =10, =>x=10-y. y-x = 4 ,=> y= 4 +x For 1 equation- If x = 5 ,y=5. x= 4 , y=6. x= 3 ,y= 7. For equation 2- If x=1 ,y=5. x=2 ,y=6. x=-1 , y=3

0Thank You

Deep Singh 6 years ago

Isme video kaise bhej skte h koi system h toh batao

0Thank You

?Urstruley Ashu? 6 years ago

Go to byjus

0Thank You

Bhavik Rajput 6 years ago

Mujhe youtube ke video per Nahin samajh mein a raha hai

0Thank You

Rahul Mehra 6 years ago

Aise nahi bata paunga

0Thank You

Rahul Mehra 6 years ago

Bhai youtube pe video dekh

0Thank You

Bhavik Rajput 6 years ago

Please mujhe iska video bhejiye

0Thank You

Bhavik Rajput 6 years ago

Mujhe ismein graph kaise nikalta hai nahin aata hai aap sikhaiye please

1Thank You

ANSWER

A cone made of paper has height 3h and vertical angle 2alpha. It contains two other cones of height 2h and h and vertical angles 4alpha and 6alpha respectively. Find the ratio of the two volumes in between the cones.??

Posted by Shadma Sayyed 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Moxit Rewar 6 years ago

Not interested

2Thank You

ANSWER

Sinθ + cosθ=√3 tanθ + cotθ=1

Posted by Moxit Rewar 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Moxit Rewar 6 years ago

To prove

2Thank You

ANSWER

For any positive integer n, prove that n3 – n is divisible by 6

Posted by Uday Jadaun 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

if in a tri. ABC AD perpendicular to BC Prove that AC square=AB square +BC square - 2BC×BD

Posted by Sharvari Mulay 6 years ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the HCF of 168 and 126

Posted by Chhoti Singh 6 years ago

CBSE > Class 10 > Mathematics

2 answers

Deep Singh 6 years ago

168=2*2*2*7*3 126=2*7*3*3 Therefore, hcf=2*7*3 =42.

0Thank You

Roman? Reigns? 6 years ago

168=2×2×2×3×7 and 126=2×3×3×7 ,.....then the hcf becomes 2×3×7=42

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ANSWER

Does the polynomial x2 + 2 have any zeros ? If so find them

Posted by Abhinash Bbx 6 years ago

CBSE > Class 10 > Mathematics

4 answers

Deep Singh 6 years ago

x^2 +2= (x+√2)(x±√2). x= -√2 , x= -√2

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Keshav Yadav 6 years ago

-1

0Thank You

Sanjeev Pandey 6 years ago

-1

0Thank You

Sanjeev Pandey 6 years ago

Yes

0Thank You

ANSWER

A vessel is in the form of an inverted cone. It's height is 8 CM and the radius of its top, which is open, is 5cm. It is filled with water up to the brim. When lead shots, each of which is a sphere of radius 0.5cm are dropped into the vessel, one-fourth of the water flows out. Find the number of lead shots dropped in the vessel

Posted by Tfk Raza 6 years ago

CBSE > Class 10 > Mathematics

1 answers

Yelley Acharya 6 years ago

100 lead shots

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ANSWER

The perimeter of a right triangle is 60cm . Its hypotenuse is 25cm . Find the area of triangle

Posted by Gouri Goutham 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Aadya Singh ? 6 years ago

Perimeter of right traingle = 60 => hypotenuse+ base + height = 60 => 25 + base + height = 60 => base + height = 35 ........(1) . Now, area of traingle = 1/2 × base × height. From eqn (1) , area of traingle = 1/2 × 35 = 17.5 cm square.

1Thank You

Deep Singh 6 years ago

Answer kaise aaya.....explain kro n thora

1Thank You

Aadya Singh ? 6 years ago

17.5 cm square.

6Thank You

ANSWER

If the horizontal distance of the bridge is 25m and the height of the bridge is 25m then find the angle of depression of the boat from the bridge

Posted by Santosh Devi 6 years ago

CBSE > Class 10 > Mathematics