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A train covers a distance of 90 km at a uniform speed . Had the speed been 15km/hr more, it would have take 30 min less for the journey . Find the original speed of the train . Solve through quadratic formula

Posted by Aoyon Roy 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Vijay purchase 5kg apple and 6kg orange for 150rs. Mohan bought 3 kg apple and 7kg orange for 162 RS. Find the price of 1kg apple and 1kg orange.

Posted by Aashish Kumar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Solve graphically the pair of linear equations 3x+y-3=0 2x-y+8=0

Posted by Pallavi Mehra 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Show that any positive odd integer is of the form 4q+1 or 4q+2 , where q is some integer

Posted by Suraj Kumar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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T²-3/2t³+3t³-2t²-9t-12

Posted by Bhawani Singh 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Maximum and minimum value of cosec theta

Posted by Avinav Kumar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Find nature of root

Posted by Harish Harish 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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If a and b are acute angle such that tana =1/3; tanB=1/2and tan(a+b) = tan a+ tan b/1-tan a tan b show that A+B

Posted by Vedant Singh 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Vedant Singh 7 years, 7 months ago

25wgr

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Prove that √3 and √5 and 5-2√3 is irrational

Posted by Alisha Akhtar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Deeksha Kalyan 7 years, 7 months ago

Not possible in this app

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Ajaykumar Apu 5 years, 8 months ago

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Find the value of x and y 8x -3y =5xy 6x -5y =- 2xy

Posted by Ekta Ranjan 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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X _ 2x_8

Posted by Anshika Mangla 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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If 5 sin theeta+3cos theeta= 5 then prove that 3 sin theeta -5 cos theeta= +or -3

Posted by Meena Meenakshi 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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3+2root5 is irrational

Posted by Som Jain 7 years, 7 months ago

CBSE > Class 10 > Mathematics

3 answers

Som Jain 7 years, 5 months ago

26361

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Ruthika Savalagi 7 years, 7 months ago

Yes it is irrational

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Unnati Pragya 5 years, 8 months ago

Let 3+2√5 be rational 3+2√5 is a rational, 3 is a rational [(3+2√5)-3] is rational [ difference of rational is rational] 2√5 is rational 1/2 *2√5 [product of rational is rational] √5 is rational This contradicts the fact that √5 is irrational. The contradiction arises by assuming that 3+2√5 is rational Hence, 3+2√5 is irrational

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Answer of question 9x-25 according to second chapter

Posted by Guramritpal Singh Sidhu Bahia 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Happy Kumar 7 years, 7 months ago

3x ka square - 5 ka square Now change in the the form of a+b into a-b And equal to zero so that u get zeroes of the polynomial

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X cube + 3 X square + 3 X + 1 / X + 5

Posted by Priyanshu Sharma 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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4x +5x^2 =?

Posted by Shivanshu Dwivedi 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Priyanshu Sharma 7 years, 7 months ago

x(4+5x)

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Using Elimination method ax-by=a ka squre + b ka square

Posted by Sidhant Kumar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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What a is terminating and recurring

Posted by Gaurav Chaudhary 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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Prove 7√5 is irrational

Posted by Yash Sharma 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Pranav Vsc. 7 years, 7 months ago

It is not in the form of p/q hence it is irrational number

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Prove 7√5

Posted by Yash Sharma 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Sohit Prajapati 7 years, 7 months ago

Let us assume that 7root is irrational no then root 7√5=a/b where a and b are co prime no Squaring both side Then√5=asquare /b square -7 Now take the lcm then asquare - 7bsquare /bsquare

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In figure 24, angle BAC is equals to 90 degree, AD perpendicular BC prove that AB square +CD square is equals to BD square +AC square

Posted by Unnati Harde 7 years, 7 months ago

CBSE > Class 10 > Mathematics