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

P(x)=x^3+ax^2+bx=16 P(2)=2^3+a×2^2+2×b=16 ..........8+4a+2b=16 ...........2a+b=4......(1) a-b =6.............. (2) {given} ......(1)+(2): ......2a+b=4 …....a-b =6 3a=10, (a=10/3).......(3) Put (3) in (2); .....10/3-b=6 ......10/3-6=b (B=-8/3)

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PA and PB are tangents to the circle drawn from an external point P. CD is a third tangent touching the circle at Q. If PA = 10cm and DQ = 2cm. C lies on PA and D lies on PB. What is length of PC?

Posted by Secret ??? 4 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Secret ??? 4 years, 8 months ago

This is a question from 1 marks questions, ch 10 maths section of this app. And Plz give solution also

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Shubham Chaudhary 4 years, 8 months ago

8cm . Shi ans bhi bta dena agr glt ho to

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Good Day 4 years, 8 months ago

8 cm

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Prove that the sum of the square of the diagonals of the llgm is equal to the sum of its side

Posted by Anant Raj 4 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Hello.. Can someone tell me how can I complete my maths?? Best channel of yutbe some tips etc!!plsss it's a humble request!!?

Posted by Teresa Singh ✌🏻 4 years, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

Sumesh ☺️☺️☺️ 4 years, 8 months ago

Or agar app sample paper? afford nahi kar sakte to bhi koi issue nahi tum ncert padh kar bhi highest marks score kar sakte ho kiuki 98% paper ncert book? se hi ata hai , to tum ncert ki bhi practice karonge to vo bhi bahut hai but practice ess hone chaiye ki question dekte hi answer aa jaye, iske liye apko apni calculation fast karni padegi ☺️☺️and just chill✌️✌️

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Sumesh ☺️☺️☺️ 4 years, 8 months ago

Mujhe lagta hai ki apko khud ki practice karni chahiye agar phir bhi nahi aye to apni teacher se pucha agar unka bhi samj naah aye to vedantu se samjo , par practice karo jada se jada , sample paper solve karke dekho , vo bahut help karega apki ☺️☺️

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Bhoomika Verma 4 years, 8 months ago

Vedantu

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Secret ??? 4 years, 8 months ago

Vedantu

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Somya Singh 4 years, 8 months ago

I think maths is not about tricks its understanding just take fun while studying and enjoy doing it Then you will not need a youtube channel to help u

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How to make our basic strong in Maths ?

Posted by Swayam Gupta 4 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Sumesh ☺️☺️☺️ 4 years, 8 months ago

Practice se☺️☺️

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Somya Singh 4 years, 8 months ago

Just practice and don't take it as a worry you must enjoy and if you start enjoying solving it your basic will be already strong

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ANSWER

The distance between the point (3-2) and (-3,2)

Posted by Ñøbïtã Ñøbïtã 4 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Bhoomika Verma 4 years, 8 months ago

X1= 3 ,X2=( -2) ,y1= (-3) ,y2=2 Distance formula X=√(x2-x1)+(y2+y1) =√ (-2-3)2+{2-(-3)}2 =√(-5)2+(2+3)2 =√(-5)2+(5)2 =√25+25 =√50

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Vandana Chauhan 4 years, 8 months ago

Sorry by mistake value write wrong ....x1 & x2= 3,-3 and y 1&y2= -2,2

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Vandana Chauhan 4 years, 8 months ago

Distance formula = underroot ( x2-x1)+(y2-y1) Here x1=3,x2=-2 and y1=-3 and y2=2

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Frnds

Posted by Sumaila Ali Choudhary??? 4 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Sumaila Ali Choudhary??? 4 years, 8 months ago

Hii richa,, i m sumaila ,, i know this is reading platform if u see my question is also a reading related questions not about any other things,,,, and. And agr tumhe isse problem bhi h to tum mt padho in question ko kisi ne aapko force ni kiya h ye padhne ke liye ,, and by the way if anyone have any problems then plzz do not see my question bcz tunhe answer to dena hota ni h bt ulta seedha bolne ke liye pehle aa jaate ho soo plzz agr problem h to aap hmare question ko mt dekha karo kisi ne aapko force ni kiya h ki tum mere question dekhoo ....... And plzz stop to suggest me these useless ideas..... Have a nice day dear ,,, take care of ur self from covid-19,,, byee

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Richa Shukla 4 years, 8 months ago

The student who had chosen the french and german they will solve your problem. Because the 1st page or in home screen you can go in subject option of french and german. By the way Crafty queen don't post these things This is a reading plateform

1Thank You

Sumaila Ali Choudhary??? 4 years, 8 months ago

Frnds ,,, plzzz aap sare subject ko choose kijiye q ki kuch log french or German mei bhi interested h or agr unhe kuch puchna hota h to vo kaise piche q ki kisi ne vo subject le hi ni rkhe soo plzz un subject ko bhi le lo .???

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ANSWER

find the distance point -3 , 4 from x axis

Posted by Nidhi Gupta 4 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Yadi X barabar 1 hai tu vah pad ka man gyat kijiye

Posted by Ayush Kumar 4 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Three no are in the ratio 3:4:5 nd their LCM is 1200 . Then, their HCF is

Posted by Lomror ? 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Secret ??? 4 years, 8 months ago

Let us rewrite the 3 no.s as 3x 4x and 5x. Their LCM =1200. It means x is their HCF. LCM=HCF ×uncommon factors i.e x×5×4×3............ 1200=60x ............... x=20

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Find the probability : (a) Either red or king (b) red and a king

Posted by Pihu ✨ 4 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Shubham Chaudhary 4 years, 8 months ago

a) red cards(including 2 kings)=26 Kings =4-2=2 P(E)=26+2/52=28/52=7/13

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Love Gurjar 4 years, 8 months ago

The angle of elevation ofthe top of the tower from points an the ground which is 22.5 m.from the foot of the tower is 30 m and height of the tower

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Tanu Choudhary # 4 years, 8 months ago

A) red cards =13 king=4, 2 red and 2 black. ie 13 already includes 2 king so, 13+2/52=15/52

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Chapter 12

Posted by Bunty Kumar Prajapati 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 3 months ago

Please ask question with complete information.

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8×2

Posted by Manimaran Aakash 4 years, 8 months ago

CBSE > Class 10 > Mathematics

4 answers

Ashu Pal 4 years, 8 months ago

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Itz Kavi 4 years, 8 months ago

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Meena Gupta 4 years, 8 months ago

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Manimaran Aakash 4 years, 8 months ago

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Koi hamko btaega ki cbse sample paper kaise download kare

Posted by Aryan Tiwari 4 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Ashu Pal 4 years, 8 months ago

Just go to official website of ncert and get downloaded

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Itz Raman Here ☺ 4 years, 8 months ago

just search on google u will get . search as cbse 2021 sample papers

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ANSWER

Please answer Q1 of NCERT Exemplar (class 10) solution of unit 2 and exercise 2.4

Posted by Aditi Ringusia 4 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the 10 th term of the AP whose sum of n term is given by 2n^2 +3n

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Anisha ✌️ .. 4 years, 8 months ago

ANSWER S n =2n 2 +3n We know that nth term of AP is given by a n =S n −S n−1 ⟹a n =2n 2 +3n−2(n−1) 2 −3(n−1) ⟹a n =4n+1 Tenth term=a 10 =4×10+1 ⟹a 10 =41

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Shubham Chaudhary 4 years, 8 months ago

A=S1= 2×1^2+3×1=5 A2 = S2-S1 =( 2×2^2+3×2)-5 =14-5=9 ..........d=a2 - a1 = 9-5=4 a10= a + (n-1)d ........5+(10-1)×4 .........5+9×4=5+36=41 A10 =41

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Secret ??? 4 years, 8 months ago

Sn=2n²+3n, we know An=Sn-Sn-1(n is at foot and - 1 is from n)....... A10 =S10 - S9........ A10 =2×10²+3×10 - 2×9-3×9........... An=200+30-18-27........ An=185

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A ladder of length 6 makes an angle of 45° with the floor while learning against one wall of a room. If the foot of the ladder is kept fixed on the floor and it made to lean against the wall opposite wall of the room, it makes an angle of 60° with the floor. Find thee distance between these two walls of the room.

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Secret ??? 4 years, 8 months ago

Let AB, CD be wall while A and C are the points where ladder touches the wall respectively. E is the foot of ladder. AE=CE=6( :- length of ladder and same ladder is used) ........ IN Triangle ABE and DEC, <AEB=60°and <DEC=45°............ BE/AE=cos60...... BE=1/2×6=3... ........ CE/DC=cos45...... CE=1/2½........ CE=3×2½..... BD=3+3×2½

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The angle of elevation of a jet plane from a point A on the ground is 60°. After a flight of 15 seconds the angle of elevation changed to 30°. If the jet plane is flying at a constant height of 1500√3 m, find the speed of the jet plane.

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Good Day 4 years, 8 months ago

100 m/sec

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Secret ??? 4 years, 8 months ago

Let the position of jet changed from point j to j'. And height of it is j'c is 1500×3½ m. We know s=d/t, t=15, so we need to find distance travelled i.e. AC. In triangle J'CA, J'C/AC =tan30 (<J'CA=30°). 1500×3½/AC=1/3½................... AC =1500×3 =4500......... S =1500/15......... S=300ms-¹

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The angle of elevation of the top of a tower from a point 15 meters away from the base is 30°. Find the height of the tower.

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Kiran Kumari 4 years, 8 months ago

Base=15m , height =h P/b=tan30 H/15=1/root 3 H=15/root 3 H=5root 3.

2Thank You

ANSWER

Prove that√2 +√3 is irrational.

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 4 years, 8 months ago

Yaha √2 hi h kya...ya fir 2+√3 h..

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ANSWER

If the zeroes of quadratic polynomial x^2 +(a+1)x+b are 2 and-3 , then find the values of a and b.

Posted by @/<$#!T Just Own 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Secret ??? 4 years, 8 months ago

2²+(a+1)2+b=0_________. 4+2a+2+b=0_________. 2a+b+6=0--------1 ________. -3²+(a+1)-3+b=0_________. -3a+b+6=0------------ 2________ :- by using elimination method, 2a +3a-b+b-6+6=0_______. 5a =0 a=0 then b=-6

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Kon sa book accha hoga ncert chodh k frnd

Posted by Alisha. Afreen 4 years, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

Aditi Ringusia 4 years, 8 months ago

RD sharma Exempler xamidea.....

1Thank You

Arshpreet Kaur Brar 4 years, 8 months ago

Modern book

2Thank You

Bhoomika Verma 4 years, 8 months ago

Xam idea

2Thank You

Pramod Mudalgeri 4 years, 8 months ago

CBSE EXAMPLER

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Alisha. Afreen 4 years, 8 months ago

Maths ka

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ANSWER

Solve for x x-2/x-4 + x-6/x-8= 6 2/3

Posted by Maahi ......♾ 4 years, 8 months ago

CBSE > Class 10 > Mathematics

4 answers

Abhay Singh 4 years, 8 months ago

Hello

0Thank You

Secret ??? 4 years, 8 months ago

56x²-684x+1960=0.do solve this and give us the answer

1Thank You

Secret ??? 4 years, 8 months ago

Is eq equal to 62/3 or there should be something else

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Sanket Sundar 4 years, 8 months ago

Khud se try kiya??

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ANSWER

Find the value of x and y by elimination method 2x+y=5, 2x+3y=7

Posted by Maahi ......♾ 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 4 years, 8 months ago

By elimination method 2x+y=5 ----------------equation 1 2x+3y=7-----------equation 2 Subtract eq 1&2 2x+y=5 2x+3y=7 - - -(sin change) ------------------------- -2y=-2 Y=2/2 y=1 Put the value of y in equation 1 2x+y=5 Y=1 2x+1=5 2x= 5-1 2x=4 X=4/2 x=2 So, x=2 and y=1

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13/1000 decimal expansion will terminates

Posted by Ankit Kumar 4 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Rohit Sain 4 years, 8 months ago

0.013

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Piyush Kumar 4 years, 8 months ago

0.013

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ANSWER

5x+y=2 6x-3y=1 Solution

Posted by Harkirat Singh 4 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 4 years, 8 months ago

By elimination method 5x+y=2 ––––––equation 1 6x-3y=1--------------equation 2 Multiply by 3 in equation 1 3(5x+y=2) 15x+3y=6 ----------------equation 3 Add equation 3&2 15x+3y=6 6x-3y =1 --------------- 21x=7 X=7/21 x=1/3 Put tha value of x in equation 2 ....... 6x-3y=1 6×1/3 -3y=1 2-3y=1 -3y =1-2 -3y= -1 Y=1/3 So ,x=1/3 and y= 1/3

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on a circular table cover of radius 32 CM design is form leaving an equilateral triangle ABC in the middle has shown in figure 13.625 find the area of design shaded region

Posted by Priyanshu Tomar 4 years, 8 months ago

CBSE > Class 10 > Mathematics