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A boy standing on a horizontal plane finds a bird flying distance of 100m from him at an elevation of 30°. A girl standing on the roof of a 20m high building , find the elevation of a 20m high building find the elevation of the same bird to be 45°.the boy and the girl are on the opposite sides of the bird . Find the distance of the bird from the girl . [Given √2=1.414]

Posted by Chaitanya Kusalkar 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Find median of Classes. frequency 1400-1550. 8 1550-1700. 15 1700-1850. 21 1850-2000. 8

Posted by Faiza Hajik 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Mohammad Gulam Gaus 5 months, 2 weeks ago

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Rationalize the following 3 root 3 minus 4 upon 4 + 3 root 3

Posted by Anushka Jha 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Hi Bye 6 months, 1 week ago

https://drive.google.com/file/d/16mHMXPdzpJc3eS3NLlbsvEsqpf1BVy9f/view?usp=drivesdk Open this and view your answer

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The difference between two number is 26 and one number is three times the other. find them

Posted by Sidra Parween 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Ayush Yadav 6 months, 2 weeks ago

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Posted by Aprajita Singh Aprajita Singh 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Najmush Shahar 6 months, 2 weeks ago

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If Sn denotes the sum of first n term of an AP prove that Sn=3(S8-S4)

Posted by Uday Gaikwad 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Sundaram joined a company for a fixed salary per month. After few months, the management felt happy with his work and multiplied his salary by some n times. This happened every few months and his salary kept getting multiplied and he reached a salary of 36 K. Every time the management increased the salary by a prime number of times only and his initial salary was 5 K1.1 How many times management did give incentive to Sundaram? 1.2 What is the maximum increment he got in his salary?1.3 What is the least incentive he got? What would be his salary had he got the same type of increment every time?1.4 Had his first salary been 9 K what would be his present Salary?

Posted by Shreya . 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Shreya . 6 months, 2 weeks ago

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Using Euclid's algorithm, find the HCF of 1651 and 2032.Express the HCF in the form (1651m+2032n) for some integers m and n

Posted by Ankit Kumar 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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write the extra questions of nature of the roots of the following quadratic equations if the real roots exist find them ex 4.3

Posted by Manpreet Kaur Johal 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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write all other trigonometric ratio of angle A in a term of sec A

Posted by Sarthak Kedare 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Neither a face card nor an Ace

Posted by M.Yashas Aradhya 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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A jack of heart or king of heart s

Posted by M.Yashas Aradhya 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Posted by Sara Ali 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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Abhay Pratap 6 months, 2 weeks ago

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If alpha and beta are the zeroes of the polynomial x²-5x+2 find the value of 1/alpha +1/beta -3 alpha ×beta

Posted by Brunda Shree S 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

2 answers

Bhavyansh Dangi 6 months, 2 weeks ago

Alpha - a ,, Beta - b ,, a+b = 5 ,, ab = 2 ,, 1/a +1/b = a+b/ab = 5/2 ,, Ans = 5/2 - 3(2) = -11/2

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Bhavyansh Dangi 6 months, 2 weeks ago

Alpha - a Beta - b a+b = 5 ab = 2 1/a +1/b = a+b/ab = 5/2 Ans = 5/2 - 3(2) = -11/2

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If alpha and beta are zeroes of polynomial 5x^2 - 6x + k such that alpha- beta=1/5. Then find the value of k.

Posted by Aditya Prajapati 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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What is substitution method in chapter 3

Posted by Diksha Samant 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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If angle A and angle B are acute angles such that cosA=cosB,then show that angle A=angle B

Posted by Vivek Verma 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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if 3825=3x×5y×17z then the value of x+y-2z is

Posted by Rohini Sharma 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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A bag contains 5 red balls and some blue balls . If the probability of drawing a blue ball is thrice that of the red ball, find the number of blue balls

Posted by Bakul Arora 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Indira Ramesh 6 months, 2 weeks ago

Let the number of blue balls be =x

P(red ball)=5/x+5

P(blue ball)=x/x+5

Given condition P(blue ball)=3×P(red ball)

x/x+5=3×5/x+5

x=15

Number of blue balls=15

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Rationalise the denominator of the following

Posted by Shraddha Bhadauriya 6 months, 2 weeks ago

CBSE > Class 10 > Mathematics

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determine by drawing graphs whether the following pair of linear equations has a unique solution or not :3x+4y=12;y=2

Posted by Thanmai R 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

2 answers

Chubirth G. Momin 6 months, 2 weeks ago

Solve the following pair of linear equations by the elimination method and the substitution method 3x-5y-4=0 and 9x=2y+7

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Chubirth G. Momin 6 months, 2 weeks ago

3x-5y-4=0 and 9x=2y+7

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4/x + 3y = 14 3/x - 4y = 23

Posted by Subhalaxmi Panda 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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A fraction becomes 9/11 if 2 is added to both the numerator and the denominator it becomes 5/6 find the fraction

Posted by Khushbu Faruqui 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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If the roots of equation x^2-px+q=0 differ by unity then p^2

Posted by Rishi Jha 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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if the roots of the equation (p-4) x²+2(p-4) x+4= 0 are equal then value of p is

Posted by Narinder Singh 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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Alpha^3 beta^2+ alpha^2 beta^3 FORMULA

Posted by B Vv 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

2 answers

Telugu Sagar Sagar 6 months, 2 weeks ago

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Vansh Prajapati 6 months, 3 weeks ago

Product of zeroes to the whole square(alpha beta to the whole square)plus sum of zeroes(alpha plus beta)...

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2,5/2,3,7/2 is given sequence find common diff.and three more solution of it

Posted by Karanvir Singh 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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Find the zeroes of the polynomial 4x²+4x-3

Posted by Nawfa Saajida 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Angel Agarwal 6 months, 3 weeks ago

4x²+6x-2x-3 =2x(2x+3)-1(2x+3) =(2x-1)(2x+3) The zeroes are -3/2 and 1/2

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Explain why 12 x 13 x 14 x 15x 16+15 is a composite number

Posted by Nawfa Saajida 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Angel Agarwal 6 months, 3 weeks ago

It can be written as 15×(12×13×14×16+1) Thus it is a composite number as it has factors other than 1 and itself

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Posted by Vrinda Yadav 6 months, 3 weeks ago

CBSE > Class 10 > Mathematics

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R Sandhesh 6 months, 3 weeks ago

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