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Whagzggtfafffs

Posted by Harsh Khanpara 7 years, 7 months ago

0 answers

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3Chocolate bars and 4 ice cream cones cost Rs135.If the price of a chocolate bar increases by 5% and that of an ice cream cone increases by 10%,the total cost goes up by Rs135 9.75.Find the price of each chocolate bar and an ice cream cone.

Posted by Neha Priya 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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A two digit number is four times the sum and three times the product of its digit Find the number

Posted by Srushti Kunkolienkar 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

Let the ten's digit of the required number be x and its unit's digit be y.
As per given condition
A two-digit number is four times the sum of its digits
Then, 10x + y = 4(x + y)
{tex}\Rightarrow{/tex} 6x - 3y = 0
{tex}\Rightarrow{/tex} 2x - y = 0......... (i)
And A two-digit number is twice the product of its digits.
Also, 10x + y = 2xy. ....... (ii)
Putting y = 2x from (i) in (ii), we get
10x + 2x = 4x²
{tex}\Rightarrow{/tex} 4x²- 12 x = 0
{tex} \Rightarrow{/tex} 4x(x - 3) = 0
{tex}\Rightarrow{/tex} x - 3 = 0
{tex}\Rightarrow{/tex} x = 3 [ten's digit, x {tex}\ne{/tex} 0]
Putting x = 3 in (i), we get y = 6.
Thus, ten's digit = 3 and unit's digit = 6.
Hence, the required number is 36.

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What is the nature of the roots of quadratic equation 3x^ -x+1/3=0

Posted by Srushti Kunkolienkar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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In triangle ABC is the external bisector of angle A meeting BC produced at E . If AB=10cm, Ac 6cm&BC 12cm find CE

Posted by Prachi Ghosh 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

According to question It is given that in {tex}\triangle {/tex}ABC, AE is the bisector of the {tex}\angle CAD{/tex}.

Also, BE = BC + CE = 12 + x

CE= x, AB = 10, AC = 6
Since, We know that, the external bisector of an angle of a triangle divides the opposite side internally in the ratio of the sides containing the angle.
{tex}\therefore \frac { B E } { C E } = \frac { A B } { A C }{/tex}
{tex}\Rightarrow \frac { 12 + x } { x } = \frac { 10 } { 6 }{/tex}
{tex}\Rightarrow{/tex} 6(12 + x) = 10x
{tex}\Rightarrow{/tex} 72 + 6x = 10x
{tex}\Rightarrow{/tex} 4x = 72
{tex}\Rightarrow x = \frac { 72 } { 4 }{/tex}
= 18 cm
{tex}\Rightarrow{/tex} CE = 18 cm

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What is prime no

Posted by Ujjwal Rajput Rajput 7 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Manu Prajapati 7 years, 7 months ago

Those numbers which is diveded by itself called prime no

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Shreyas Vartak 7 years, 7 months ago

It is divisible by 1 and itself only

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the roots of the quadratic equation if they exist by the method of completing the square 2 x square - 7 x + 3 equal to zero

Posted by Amman Hussain 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Amaira Desai 7 years, 7 months ago

B^2-4ac (-7)^2-4×2×3 49-24 25>0 so it's two roots exist. (x+b/2a)^2 - (b/2a)^2+c/a=0 (x+(-7/4))^2-(-7/4)^2+3/2=0 (x-7/4)^2-49/16+3/2=0 (x-7/4)^2=49/16-3/2 (x-7/4)^2=49-24/16 (x-7/4)^2=25/16 (x-7/4)= +-root 25/16 (x_7/4)=+-5/4 X=7/4+-5/4 Either X=7+5/4 X=12/4=3 Or x=7-5/4 X=2/4=1/2

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When is 10 th result

Posted by Rakshitha Rakshitha 7 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Amaira Desai 7 years, 7 months ago

30th of may

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Nishant Singh 7 years, 7 months ago

Yet not fixed but may be at last of may or starting of june month

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Write the nature of the roots of quadratic equation 3x sq.-x+1/3=0

Posted by Srushti Kunkolienkar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

3 answers

Srushti Kunkolienkar 7 years, 7 months ago

What will be the answer

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Vaishnavi Priya 7 years, 7 months ago

Find determinant (D) and compare the value of D with Zero if D=0 then it has only one root ,if D is greater than zero than it has many roots and if zero is greater than D then there is no any solutions of the given equation.

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Srushti Kunkolienkar 7 years, 7 months ago

How to solve these equation?

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The roots of the quadratic equation x sq.-5=0 is ______

Posted by Srushti Kunkolienkar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Varada Menon 7 years, 7 months ago

-√5 and +√5

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Ffxff

Posted by Pratham Tiwari 5 years, 8 months ago

CBSE > Class 10 > Mathematics

0 answers

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Sin60 cos30 + sin30 cos60

Posted by Jai Singh Shekhawat 7 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Arati Motivarash 7 years, 7 months ago

Xyz

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Rashmi Bajpayee 7 years, 7 months ago

(√3/2)(√3/2) + (1/2)(1/2)
= (3/4) + (1/4)
= 4/4
= 1

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2-2×6÷10×5+3

Posted by Amaira Desai 7 years, 7 months ago

CBSE > Class 10 > Mathematics

4 answers

Vivek Kohli 7 years, 7 months ago

0 according to BODMAS

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Rahul Sharma 7 years, 7 months ago

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Rashmi Bajpayee 7 years, 7 months ago

= 2 - 2 x 0.6 x 5 + 3
= 2 - 6 + 3
= 0

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Renuka Tiwari 7 years, 7 months ago

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If cot theta=12/13 show that 1-cos`2 theta/2-sin theta =3/5

Posted by Swami Saxena 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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How many term of ap 72,69,66, make sum of n term 897

Posted by Mahak Jain 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Prachi Ghosh 7 years, 7 months ago

no answer of this question cause (d) is not constant. 69 - 72 = -17 , 66 - 69 = -95 . so, answer 0 .

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Find the LCM of 30240 and 29700

Posted by Ujwal Mahajan 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Ujwal Mahajan 7 years, 7 months ago

1663200

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2+2×2÷2-2

Posted by Nakul Gurjar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

4 answers

Amaira Desai 7 years, 7 months ago

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Priti Purohit 7 years, 7 months ago

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Prabha Paul 7 years, 7 months ago

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Adanan Hussain 7 years, 7 months ago

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Cot- 70 degree = ten 80degree?

Posted by Ayush Kumar 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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If a and b are two odd positive integers such that a is greater than b then prove that one of the two numbers a +b/2 and a-b /2 is odd and the other is even

Posted by Mahender Kapoor 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

If a and b are odd numbers then it should be in 2q+1 or 2q+3 form where q is a positive integer.

Let a = 2q + 3 , b = 2q + 1 and a > b
Now, {tex}\frac{a + b } {2} = \frac{ 2q + 3 + 2q + 1}{2}{/tex}
{tex}= \frac { 4 q + 4 } { 2 }{/tex}
= 2q + 2
{tex}\frac{a+b}{2}{/tex}=2(q+1) = an even number..........(1)
Now

{tex}\frac { a - b } { 2 } = \frac { ( 2 q + 3 ) - ( 2 q + 1 ) } { 2 }{/tex}
{tex}= \frac { 2 q + 3 - 2 q - 1 } { 2 }{/tex}
{tex}\frac{a-b}{2}= \frac { 2 } { 2 }{/tex} = 1 = an odd number..........(2)
Hence From (1) and (2) {tex}\frac{a+b}{2}{/tex} and {tex}\frac{a-b}{2}{/tex} are even and odd numbers respectively

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Where are the question papers of year 2008,2009 and 2010 of delhi ,outside delhi and foreign

Posted by Kirat Singh 6 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 4 months ago

You can check last year papers here : https://mycbseguide.com/cbse-question-papers.html

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Solve for X and Y : 2x_3/y=9,3x+7/y=2 ( y not equal 0

Posted by Ayush Singh 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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cosec A + sec A= cosec A * sec A

Posted by Soumi Roy Choudhury 7 years, 7 months ago

CBSE > Class 10 > Mathematics

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All question

Posted by Rajat Rehman Ali 7 years, 7 months ago

CBSE > Class 10 > Mathematics

0 answers

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85*89

Posted by Dumesh Gupta 7 years, 7 months ago

CBSE > Class 10 > Mathematics

0 answers

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New sullabus of cbse 10 board exam

Posted by Pratibha Sahu◝(⑅•ᴗ•⑅)◜..°♡ 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Sarthak Gupta 7 years, 7 months ago

CBSE Class 10 Syllabus CBSE Syllabus for Class 10 Maths CBSE Syllabus for Class 10 Science CBSE Syllabus for Class 10 English CBSE Syllabus for Class 10 Hindi CBSE Syllabus for Class 10 Social Science

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Define HCF of two positive integer.

Posted by Pritam Padole 7 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Mohit Jangir 7 years, 7 months ago

According to Euclid Division Lemma ,HCF of any two positive integer a and b ,with a>b,is obtained as follow :STEP1:a=bq+r,0<r<b. STEP2:If r=0,the HCFis b. STEP3 :If remainder is 0 then stage will be HCF (a,b).Also ,HCF (a, b)=HCF (b,r).

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Conjugate of 2 + √5

Posted by Kulbir Kundal 6 years, 4 months ago

CBSE > Class 10 > Mathematics