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

:》Sum of zeros = -3 ; Product of zeros = 2 :》Quadratic polynomial = k[x2 - ( Sum of zeros)x + ( Product of zeros)] :》k [ x2 - (-3)x + 2] :》k [ x2 + 3x + 2] ,where k =1 :》 Quadratic Polynomial = x2 + 3x +2

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Find the area of the shaded region in given Fig. where arcs drawn with centres A,B,C and D intersect in pairs at mid-points P,Q,R and S of the sides AB,BC,CD and DA, respectively of a square ABCD (Use π=3.14).

Posted by Elavarasan Alexander 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

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Curved surface area of the cylinder height 5 cm is 94.2 cm. Radius of the cylinder is (Take π=3.14

Posted by Navjot Kaur 2 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Smriti Gupta 2 years ago

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Meenu Godara 2 years, 1 month ago

3cm answer

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Navjot Kaur 2 years, 1 month ago

What is the answer

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3+5*4/20-9 . what's answer.

Posted by Anshu Yadav 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Harsh Verma 2 years, 1 month ago

-5

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Two tangents TP and TQ are drawn to a circle with centre O from an external point T. Prove that angle PTQ=2angleOPQ

Posted by Account Deleted 2 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Neeraj Varshney 2 years ago

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Mahir Patel 2 years, 1 month ago

• hence, angle TPO + angle PTQ + angle TQO +angle QOP =180 degree • angle poq + angle

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One of the roots of quadratic equation a^2x^2-2abx+2b^2=0

Posted by Siya Mane 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Anany Utkarsh Roll No 4 2 years, 1 month ago

If we take the discriminant b²-4ac it will come in negative therefore it has no real roots

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(A+b) square

Posted by Vansh Giri 2 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Arshdeep Singh 2 years ago

a²+b²+2ab

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Himanshu Kumar Modi 2 years, 1 month ago

a2+2ab+b2

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Arshdeep Kaur 2 years, 1 month ago

a²+b²+2ab

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Vansh Giri 2 years, 1 month ago

A square+b square+2ab

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To practically design a frustum of cone

Posted by Akanksha Sagar 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

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x-y+1and 3x+2y-12 make graphical representation?

Posted by Krittika 💜💜 Patil 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Anas Shaikh 2 years ago

Ok jaan

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Marks less than 10 less than 20

Posted by Nitya Aswani 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Kishan Ojha 2 years, 1 month ago

0000

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In the given figure, AB is one such tangent to a circle of radius 75 cm. Point O is centre of the circle and ABO = 30o. PQ is parallel to OA. Based on above information: (i) find the length of AB. 1(ii) find the length of OB. 1(iii) find the length of AP.

Posted by Sanjeev Kumar Singh 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Please send 2023 maths ques paper

Posted by Priyanka Dhiman 2 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Vijayant Choudhary 2 years, 1 month ago

Answer key

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Sanjeev Kumar Singh 2 years, 1 month ago

You will in this app

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Ayush Kushwah 2 years, 1 month ago

Please search that : Previous Year Maths Questions Paper Class X 2023-2024

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How to download previous year question paper

Posted by Umang Tibrewal 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Ayush Kushwah 2 years, 1 month ago

On the Right - hand side/between , a option is given that Download as PDF or JPG , so you can download as your choice

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Find the greatest number which on dividing 1657 and 2037 leaves remainder 6 and 5 respectively

Posted by Dhanya R. 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Kaushik Verma 2 years, 1 month ago

Find the HCF of 1651 and 2032

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Prove That 3+2√2 is an irrational number

Posted by Mansi Chauhan 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Shreya Panwar 2 years, 1 month ago

The answer is Let 3+2√2 be a rational number and it can be written in the form of : p/q = 3+2√2 p/q -3 = 2√2 p-3q / q =2√2 Rational = irrational Therefore our assumption was wrong. Hence 3+2√2, is an irrational number.

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Find to consecutive positive integers sum of whose squares is 421

Posted by Roshni . 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Kaushik Verma 2 years, 1 month ago

x²+(x+1)²=421 x²+x²+1+2x=421 2x²+2x=420 2x²+2x-420=0 2(x²+x-210)=0 x²+x-210=0 D=b²-4ac =1²-4×1×(-210) =1+840 =841 underoot841=29 x=14 x=-15(it is neglected)

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Find two numbers whose sum is 25 and product is 156

Posted by Roshni . 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Spoorti Izare 2 years, 1 month ago

X=13 and 12 and y= 13 and 12

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If the sum of first 7 term of an ap is 49 and that of 17 term is 289 find the sum of first n terms.

Posted by Kashish Bhardwaj 2 years, 1 month ago

CBSE > Class 10 > Mathematics

5 answers

Deepanshu Garg 2 years, 1 month ago

It's ok bro

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Abhinav Raj Singh 2 years, 1 month ago

its ok brother

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Naman Sisodiya 2 years, 1 month ago

Thank

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Abhinav Raj Singh 2 years, 1 month ago

S7 = 7/2{2a+(n-1)d} => 49= 7/2{2a+(n-1)d} => 14= 2a + (7-1)d =>14 = 2a +6d => a + 3d = 7 ---------------(dividing by 2) => a = 7-3d -----------------(i) for S17:- S17 = 17/2 {2a+(n-1)d} => 289= 17/2 {2a+(17-1)d} => 34 = 2a + 16d => a = 17- 8d ---------------(ii) by eq(i) and eq(ii):- 17 - 8d = 7-3d =>10=5d =>d=2 again by eq(i):- a =1 by Sn:- Sn = n/2 {2a+(n-1)d} =>Sn = n/2{2+(n-1)2} => Sn = n + n^2 - n => Sn = n^2

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Abhinav Raj Singh 2 years, 1 month ago

n^2

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If the sum of first 7 term of an ap is 49 and that of 17 term is 289 find the sum of first n terms.

Posted by Kashish Bhardwaj 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Mukesh want to distribute ice cream which is in a container shaped like a right circular cylinder having diameter 18 cm and height 15 CM the ice cream is to be filled into cons of height 8 cm and diameter 5 cm use having spherical and on the top find the exact number of such cons which can be fully filled with ice cream (use theta is equals to 3.14)

Posted by Gayatri Meghwal 2 years, 1 month ago

CBSE > Class 10 > Mathematics

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And all tanker is having metallic tank in the form of the right circular cylinder with the hemispherical ends if the height of the cylinder is 10 m and diameter of the circle section is 4 m to save it from rust it is to be painted find the cost of painting the solid at the rate of rupees 10 for 1 square CM of the area( used by is equals to 3.14)

Posted by Gayatri Meghwal 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Kaushik Verma 2 years, 1 month ago

TSA Of tank= CSA of Cylinder +2×CSA Of Hemisphere = 2pirh+4pir² =2pir(h+2r) =2×3.14×2(10+4) =4×3.14×14 =56×3.14 175.84m² ( 17584cm²) Cost of painting = 10×17584=175840cm²

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The mode of a grouped frequency distribution is 75 and the modal class is 65-80.The frequency of the class preceding the modal class is 6 and the frequency of the class succeeding the modal class is 8.Find the frequency of the modal class.

Posted by Kaushik Verma 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

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Find the value of k for which the quadratic equation 2x²-kx+k=0

Posted by Kanta Sha 2 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Kaushik Verma 2 years, 1 month ago

D=b²-4ac=0 =k²-4×2×k=0 = k²-8k=0 =k(k-8)=0 = k-8=0 =k=8

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Aniket Singh 2 years, 1 month ago

Given : b²-4ac=0 So, (-k)²-4×2×k=0 k²-8k=0 k(k-8)=0 k=8

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-2+5+8________ +x = 155

Posted by Savitoj Kaur 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Abhinav Raj Singh 2 years, 1 month ago

d is the common difference and a is the first term this series forms A.P. as it has common difference and a2-a1 = a3-a2=3 d =a2-a1 = 3 a =2 and given Sn = 155 also Sn =n/2 {2a+(n-1)d} => 155 = n/2{ 4 + (n-1)3} => 310= 4n +3n^2 - 3n => 3n^2 +n -310 =0 => 3n^2 -30n +31n -310 =0 =>3n(n-10)+31(n-10)=0 =>(3n+31)(n-10)=0 since number of terms (n) cant be negative so n=10

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The sum of ages of Anup and his father is as old as his father. Now, he will be 5 times as old as his son Anuj is now, Anuj will be 8 year older than Anup is now, when Anup is as old as his father. What are their ages now ?

Posted by Sakshi Pandey 2 years, 1 month ago

CBSE > Class 10 > Mathematics