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ANSWER

The equation whose roots are twice the reciprocal of the roots of the quadratic equation x^2– px+1=0 is (a) x2– px+4=0 (b) x2– 2px – 4=0 (c) x2– 4px+2=0 (d) x2– 2px+4=0

Posted by Deepak Kashyap 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Y=x,y=0 and 2x+3y=30

Posted by Vikas Ghoderao 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

√4 + √3/2/√6+2/9

Posted by A.Kamalaxmi Laxmi 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Divyansh Vashishtha 5 years, 3 months ago

2.57577561282

ANSWER

Find the value of ‘k’ such that the quadratic polynomial x2 - (k + 6) x + 2 (2k +1) has sum of the zeros is half of their product.

Posted by Ankur Kumar 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 3 months ago

Given quadratic polynomial,
x² - (k+6)x + 2(2k+1) = 0

By comparing it with ax²+bx+c = 0,we get
a = 1 , b = -(k+6) , c = 2(2k+1)

Sum of zeroes = -b/a
= -[-(k+6)]/1
= k+6

Product of zeroes = c/a
= 2(2k+1)/1
= 2(2k+1)

As per problem,
Sum of zeroes = ½ × product of zeroes
k+6 = ½ × 2(2k+1)
k+6 = 2k+1
2k-k = 6-1
k = 5

ANSWER

What is Gp

Posted by Suraj Verma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Soumyadip Das 5 years, 3 months ago

Geometric Progression

Hema S B 5 years, 3 months ago

Gross product

Ashish V 5 years, 3 months ago

GENERAL PRACTITONER, a doctor who provides general medicine treatment for the people who live in particular area

ANSWER

Root of 108

Posted by Leya Shine 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Soumyadip Das 5 years, 3 months ago

10.39

Tapash Das 5 years, 3 months ago

6√3

Seraj Ali ????? 5 years, 3 months ago

6root 3

ANSWER

root 5 is an irrational number . prove that

Posted by Jashraj Bhanushali 5 years, 3 months ago

CBSE > Class 10 > Mathematics

3 answers

Jashraj Bhanushali 5 years, 3 months ago

I know

Gaurav Seth 5 years, 3 months ago

"√5 is an “irrational number”.

Given:

√5

To prove:

√5 is a rational number

Solution:

Let us consider that √5 is a “rational number”.

We were told that the rational numbers will be in the “form” of form Where “p, q” are integers.

So,

we know that 'p' is a “rational number”. So 5 \times q should be normal as it is equal to p

But it did not happens with √5 because it is “not an integer”

Therefore, p ≠ √5q

This denies that √5 is an “irrational number”

So, our consideration is false and √5 is an “irrational number”."

Seraj Ali ????? 5 years, 3 months ago

Book mai hai bhai

ANSWER

How to do this question? Write the number of real roots of the equation x^2+ 3|x| + 2 =0

Posted by Sunidhi Singh 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Mayank Sharma 5 years, 3 months ago

x^2+3x+2 x^2+2x+1x+2 x(x+2)+1(x+2) (x+1)(x+2) x+1=0 x=-1 x+2=0 x=-2

ANSWER

check whether 6' can end with the digit 0 for any natural number n.

Posted by Swarupanand Bajbalkar 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Chandresh Tiwari 5 years, 3 months ago

6 will not be end with the 0 . Because it does not have factor of 6 ---2 , 5 so it will not end 0.

ANSWER

Solve :pairs of linear equations :2x-y=4 3y-x=3 :2x+3y=12 x-y=1 :9x+3y=12 x-y=1

Posted by Vikas Ghoderao 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The system of eq 2x+ 3y -7=0 ,6c+5y -11

Posted by Shivani Chaudhary 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

The system of eq 2x+3y-7=0,6x+5y-11 has

Posted by Shivani Chaudhary 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhumika Kanel 5 years, 3 months ago

Consistent

ANSWER

Show that: tan 48 tan 23 tan 67=1

Posted by Richa Shree 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

your question is wrong OK. ? tan48.tan23.tan42.tan67=1 RHS=tan48.tan42.tan23.tan67. =tan48.tan(90-48).tan23.tan(90-23). =tan48.cot48.tan23.cot23. =tan48.1/tan48.tan23.1/tan23 =1 I hope this really help you ???

ANSWER

What is sin30=?

Posted by Anurag Sharma 5 years, 3 months ago

CBSE > Class 10 > Mathematics

4 answers

Making Craft Sadaf 5 years, 3 months ago

1/2

Avinash S 5 years, 3 months ago

Sin30=1/2

Richa Shree 5 years, 3 months ago

1/2

Anurag Sharma 5 years, 3 months ago

Testing app?

ANSWER

64x - 45y = 289 and 45x - 64y = 365 , solve this linear equation in two variables .

Posted by Siona Dalmet 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yadu Raj 5 years, 3 months ago

64x-45y=289 x=289+45y/64......let this be equation 1 Similarly in the second equation 45x-64y=365 x=365+64y/45.......let this be equation 2 From eq 1&2 289+45y/64=365+64y/45 Now by cross multiplication 45(289+45y)=64(365+64y) Simplifying...... 13005+2025y=23360 +4096y Taking LHS to RHS .....we get 2071y=-10355 y=-10355/2071 y=-5 By substituting y in eq 1..... 64x -45 × (-5)=289 64x +225=289 64x=289-225 64x=64 Thefore x=1.......hence x=1 y= -5

ANSWER

Optional exercise in Class 10 math board exam is come or not

Posted by Vansh Saini 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Madhu Sudhan Pandey 5 years, 3 months ago

Yes some questions are come from that concept not this questions come ok

ANSWER

Verify that 3,-1 and -1/3are the zeros of the polynomial p(x)=3xsqure -5xsqure-11x-3 and then verify the relational between the zeros its coefficients

Posted by Sripriya Sudarsanan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Is completing the square method has been removed from cbse board

Posted by Disha Agarwal 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Surinder Sharma 5 years, 3 months ago

yes

ANSWER

Using quadratic formula solve ab^2x(a/dx+2c/b)+c^2d=0

Posted by Shamal Patil 5 years, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Tan 26° /cot 64 ° = ??

Posted by Kiran Dhande 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

tan 26°/cot 64°
= tan (90° - 36°)/cot 64°
= cot 64°/cot 64°
= 1

ANSWER

The hypotenuse of a right triangle is 25 cm. The difference between the lengths of the other two sides of a triangle is 5 cm. Find the lengths of these sides.

Posted by Falguni Akhare 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

Let the length of the shorter side b x cm. Then, the length of the longer side = (x + 5) cm.

Since the triangle is right-angled, the sum of the squares of the sides must be equal to the square of the hypotenuse (Pythagoras Theorem).
x² + (x + 5)² = 25²
or x²+ x² + 10x + 25 = 625

or 2x² + 10x - 600 = 0
or x²+ 5x - 300 = 0

or (x + 20) (x - 15) = 0

This gives x = 15 or x = - 20

We reject x = - 20 and take x = 15.
Thus, length of shorter side = 15 cm.
Length of longer side = (15 + 5) cm, i.e., 20 cm.

ANSWER

The end term of an ap cannot be 3 and square + 5 justify your answer

Posted by Namitha Namitha 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Suraj Verma 5 years, 3 months ago

The nth term of an AP can't be n2+1. Difference between first and second term = 5 - 2 = 3. Their common difference is not equal. In A.P,common difference should not be equal, so this series can't be A.P.