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

H= 3.5 , R = 50/2=25 cm 25/100= 0.25 Curved Surface Area= 2πrh = (2 x 22/7 x 0.25 x 3.5 )m^2 = 5.5 m^2 Cost of painting 1 m^2 area = Rs.12.50 Cost of painting 5.5 m^2 area = Rs.5.5×12.50 = Rs.68.75

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x^2 + 7x - 1

Posted by Ranjeet Singh Rajput 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Oviya Arumugam 4 years, 6 months ago

b^2-4ac 7×7-4×1×1=45 Formulae is ( -b plus or minus root of (b^2-4ac))/2×a Substitute value in the formulae The answer will be (-7+_root of 45)/2

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6x^2 - x + 12 solve the quadratic equations

Posted by Ranjeet Singh Rajput 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Anurag Singh 4 years, 6 months ago

Ya yogeshwaran bro your answer is correct

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Oviya Arumugam 4 years, 6 months ago

It does not contain real roots ie apply b^2-4ac it will less than 0

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Which are the theorems in mathematics comes in 2021 board

Posted by Rahul Sah 4 years, 6 months ago

CBSE > Class 10 > Mathematics

4 answers

Sps Shashivendra Thakur 4 years, 6 months ago

bpt

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Divyanshi Choudhary 4 years, 6 months ago

BPT,converse of BPT and Pythagoras

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Varsha Shingh 4 years, 6 months ago

Manve karna ki Chamak Divya Chamak Ke a Saransh

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Life Is Full Of Struggle 4 years, 6 months ago

Bpt theorem

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Write an equation of the line parallel to the given line 3x+4y=14.

Posted by Aditi Aditi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Veerpal Sandhu 4 years, 6 months ago

Equation of line parallel to 3x−4y−5=0 is given by, 3x−4y+c=0 Also distance between given line is 1 ( c1- c2)√1+m^2 ⇒c+5 √3^2 +4^2 =1 ⇒∣c+5∣=5⇒c=0,−10 Hence line parallel to 3x−4y−5=0 and unit distance from it is 3x−4y−10=0 or 3x−4y=0

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Ff_Girl Tannu 4 years, 6 months ago

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Find the value of m so that (3,2) is a solution of the equation y=mx-5.

Posted by Aditi Aditi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

3 answers

Life Is Full Of Struggle 4 years, 6 months ago

2= m(3)-5......... 7=m(3).......... m=7/3

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Aditi Aditi 4 years, 6 months ago

Thanks✨✨

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Life Is Full Of Struggle 4 years, 6 months ago

2=m(3) -5 7=3m m=7/3

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Write an equation of the line parallel to the given line 3x+4y=14.

Posted by Aditi Aditi 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Nitin Kumar 4 years, 6 months ago

6x+8y=59.

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Is 1 prime or composite number?

Posted by Siya Singh 4 years, 6 months ago

CBSE > Class 10 > Mathematics

5 answers

Prerna Jain 4 years, 6 months ago

Neither composite nor prime

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Erin Biju 4 years, 6 months ago

It is not prime And composite

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Aditi Aditi 4 years, 6 months ago

It is neither prime nor composite.?

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Bahman Ankush 4 years, 6 months ago

Yes

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Siddharth S Singh 4 years, 6 months ago

1 is neither prime nor composite

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Case stady

Posted by Amir Khan 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Sunny Singh 4 years, 6 months ago

Is there any figure

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Siya Singh 4 years, 6 months ago

Write the complete question

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A house of cards or card castle is a structure created by stacking playing cards on top of each other, often in shape of pyramid. To build a tower of cards 2 cards are placed against each other in an upside down position forming a triangular shape. Another triangle next to it and so on. Same process is repeated in next row and so on. A man formed such a house of cards with 41 such triangular shape as base, 39 in the next, 37 in next and so on. He made 16 such rows in this manner one above another. (a) Number of triangles in the top row is (i) 10 (ii) 11 (iii) 12 (iv) 9 (b) Difference of number of triangles in the 8th and 13th row from bottom is (i) 10 (ii) 12 (iii) 15 (iv) 20 (c) The number of triangles in the 11th row from the bottom is (i) 10 (ii) 20 (iii) 21 (iv) 25 (d) Number of deck of cards each having 52 playing cards used by him if total cards he used was 832 is (i) 5 (ii) 6 (iii) 8 (iv) 16 (e) The number of triangles in the 4th row from the top is (i) 15 (ii) 16 (iii) 17 (iv) 18

Posted by Vaishnavi Gupta 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If alpha and beta are the zeroes of polynomial x²-5x+k such that alpha-beta=1,find the value of k.

Posted by Anjali Nain 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Nitin Kumar 4 years, 6 months ago

K=6

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If A and B are the zeros of polynomial 4x^2-5x-1,find the value of A^2×B+A×B^2

Posted by Aditya Dadhich 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

following pie chart depicts the expenditure of a State Government under Public welfare 209 Road 10 25 45 Education Others From the pie chart, answer the following: If the total spending is 10 crores, how much money was spent on roads? (ii) How many times is the amount of money spent on education compared to the amount spent on roads? (iii) What fraction of the total expenditure is spent on both roads and public welfare together? (Hint: Spending under different heads can be calculated by dividing 100 crores in the ratio 10: 20: 25: 45}

Posted by Krishna King 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

simplify: (1-sin²θ) -cos²θ

Posted by Om Kumar 4 years, 6 months ago

CBSE > Class 10 > Mathematics

4 answers

Bhoomika Verma 4 years, 6 months ago

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Kiran Kumari 4 years, 6 months ago

(1_SIN^2)_Cos^2 Cos^2-cos^2=0

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Sunny Singh 4 years, 6 months ago

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Hayat 06 4 years, 6 months ago

Cos²@ - cos²@ = 0

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In an AP. a=8, an=62, sn=210 find n and d

Posted by Kolli.Tanusha Naga Durga 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Kiran Kumari 4 years, 6 months ago

an=a+(n-1)d 62=8+(n_1)d 54=nd-d (1) Sn=n/2 (2a+(n-1)d) 210=n/2 (2×8+(n-1)d) 420=n (16+nd-d ) 420=16n+n (nd-d ) 420=16n+n (54) (from 1) 420=16n+54n 420=70n 420/70=n Hence n=6 Now put the value of n in equation 1,we get 54=nd-d 54=6d-d 54/5=d

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D and E are the points on the side CA and CB,respectively of a ∆ABC right angle at C.Prove that AE^2+BD^2=AB^2+DE^2.

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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If the roots if the equation ax^2+2bx+c=0 and bx^2-2√acx+b=0 are simultaneously real,then prove that b^2=ac.

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Ranjeet Singh Rajput 4 years, 6 months ago

answr Join / Login What would you like to ask? 11thMathsComplex Numbers and Quadratic EquationsQuadratic EquationsIf the roots of the equatio... Maths If the roots of the equations ax2+2bx+c=0 and bx2−2acx+b=0 are simultaneously real, then prove that b2=ac. Easy Answer Let D1 and D2 be the discriminants of the two equations, then D1≥0 and D2≥0 ⇒4b2−4ac≥0 and 4ac−4b2≥0 ⇒b2≥ac and ac≥b2 ⇒b2=ac

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If 2sin^2theta-cos^2theta=2,then find the value if theta.

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Sunny Singh 4 years, 6 months ago

Thita = 90°

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Gade Sarvesh 4 years, 6 months ago

2sin^2theta-cos^2theta=2 Theta=90°.

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The points A(4,7),B(p,3)and C(7,3)are the vertics of a right triangle, right angle at B.Find the value of p.

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the perimeter of semicircular protractor is 36cm,find its diameter.

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

3 answers

Life Is Full Of Struggle 4 years, 6 months ago

11.45 is wrong answer ?

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Life Is Full Of Struggle 4 years, 6 months ago

2r+πr=36......... r(2+π)=36......... r{2+22/7}=36........ r(36/7) =36 ...... r=7 ...... Diameter = 2(7) =14cm

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Kinjal Agarwal 4 years, 6 months ago

11.45

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Taking theta=30°,verify cos3theta=4cos(cube)theta-3cos theta

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If two tangents incline at an angle of 60°are drawn to a circle of radius 3 cm,find the length of each tangent?

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the least number that is divisible by all the number from 1 to 10 and why?

Posted by Himanshu Verma 4 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhoomika Verma 4 years, 6 months ago

The least number divisible by all the numbers from 1 to 10 will be the LCM of these numbers.....1=1 .......2=2×1 .....3=3×1......4=2×2......5=5×1.. ...6=2×3......7=7×1.......8=2×2×2........9=3×3.....10=2×5...........so,LCM of these numbers=1×2×2×2×3×3×5×7=2520........hence,least number divisible by all the numbers from 1 to 10 is 2520.

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The perimeter of rhombus ABCD is 40cm find the area of rhombus if it's digonal BD measure 12cm

Posted by Pratik Tomar 4 years, 6 months ago

CBSE > Class 10 > Mathematics