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

Because herbivores eats grass with contain cellulose and cellulose takes much time to be digest while carnivorous eat meat which contains Protein and protein can be easily digested. Thus herbivores have larger intestine than carnivorous.

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Venkatesh 7 years, 8 months ago

Because herbivores eat food that offs rich in starch. And starch is mainly digested on small intestine.

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X²+x-p(p+1)=0

Posted by Avay Sasmal 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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If angle B and angleQ are acute angle such that sin B = sin Q then prove that angle B = angle Q

Posted by Harjeet Kaur 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 5 months ago

Consider two right triangles ABC and PQR in which {tex} \angle B{/tex} and {tex}\angle Q{/tex} are the right angles.
We have,

In {tex}\triangle ABC{/tex}
{tex}\sin B=\frac{AC}{AB}{/tex}
and, In {tex}\triangle PQR{/tex}
{tex}\sin Q=\frac{PR}{PQ}{/tex}
{tex} \because \quad \sin B = \sin Q{/tex}
{tex} \Rightarrow \quad \frac { A C } { A B } = \frac { P R } { P Q }{/tex}
{tex} \Rightarrow \quad \frac { A C } { P R } = \frac { A B } { P Q } = k{/tex}(say) ...... (i)
{tex} \Rightarrow {/tex} AC = kPR and AB = kPQ .....(ii)
Using Pythagoras theorem in triangles ABC and PQR, we obtain
AB² = AC² + BC² and PQ² = PR² + QR²
{tex} \Rightarrow \quad B C = \sqrt { A B ^ { 2 } - A C ^ { 2 } } \text { and } Q R = \sqrt { P Q ^ { 2 } - P R ^ { 2 } }{/tex}
{tex} \Rightarrow \quad \frac { B C } { Q R } = \frac { \sqrt { A B ^ { 2 } - A C ^ { 2 } } } { \sqrt { P Q ^ { 2 } - P R ^ { 2 } } } = \frac { \sqrt { k ^ { 2 } P Q ^ { 2 } - k ^ { 2 } P R ^ { 2 } } } { \sqrt { P Q ^ { 2 } - P R ^ { 2 } } }{/tex} [ using (ii) ]
{tex} \Rightarrow \quad \frac { B C } { Q R } = \frac { k \sqrt { P Q ^ { 2 } - P R ^ { 2 } } } { \sqrt { P Q ^ { 2 } - P R ^ { 2 } } } = k{/tex}...(iii)
From (i) and (iii), we get
{tex} \frac { A C } { P R } = \frac { A B } { P Q } = \frac { B C } { Q R }{/tex}
{tex} \Rightarrow \quad \Delta A C B - \Delta P R Q{/tex} [By S.A.S similarity]
{tex} \therefore \quad \angle B = \angle Q{/tex}
Hence proved.

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Find the zeroes of quadratic polynomial and verify the relationship between zeroes and coefficients x2+7x+10

Posted by Ajay Surya 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Use euclid's division Lemma to proove that one and only one out of n , n+2and n+4 is divisible by 3 where n is any positive integer

Posted by Dev Ji 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 5 months ago

Let the number be (3q + r)
{tex}n = 3 q + r \quad 0 \leq r < 3{/tex}
{tex}\text { or } 3 q , 3 q + 1,3 q + 2{/tex}
{tex}\text { If } n = 3 q \text { then, numbers are } 3 q , ( 3 q + 1 ) , ( 3 q + 2 ){/tex}
{tex}3 q \text { is divisible by } 3{/tex}.
{tex}\text { If } n = 3 q + 1 \text { then, numbers are } ( 3 q + 1 ) , ( 3 q + 3 ) , ( 3 q + 4 ){/tex}
{tex}( 3 q + 3 ) \text { is divisible by } 3{/tex}.
{tex}\text { If } n = 3 q + 2 \text { then, numbers are } ( 3 q + 2 ) , ( 3 q + 4 ) , ( 3 q + 6 ){/tex}
{tex}( 3 q + 6 ) \text { is divisible by } 3{/tex}.
{tex}\therefore \text { out of } n , ( n + 2 ) \text { and } ( n + 4 ) \text { only one is divisible by } 3{/tex}.

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Use euclid's division algorithm, find which of the following pairs of numbers are co prime : 1. 231,396. 2. 847,2160

Posted by Dev Ji 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 6 years, 5 months ago

Let us find HCF of 396 and 231 using Euclid’s division algorithm
{tex}\begin{array}{l}396=231\times1+165\\231=165\times1+66\\165=66\times2+33\\66=33\times2+0\\So\;HCF(396,231)=33\\\end{array}{/tex}

So 33 is common factor of 396 and 231

and co-prime numbers have common factor of 1 only.
∴ The 396 and 231 are not co-prime.
Here we have to find out HCF of 2160 and 847 by Using Euclid’s division Lemma, we get
2160 = 847{tex}\times{/tex}2 + 466
Also 847 = 466{tex}\times{/tex}1 + 381
466 = 381{tex}\times{/tex}1 + 85
381 = 85{tex}\times{/tex}4 + 41
85 = 41{tex}\times{/tex}2 + 3
41=3{tex}\times{/tex}13 + 2
3 = 2{tex}\times{/tex}1 + 1
2 = 1{tex}\times{/tex}2 + 0
{tex}\therefore{/tex}HCF = 1.
Hence the numbers are co-prime.

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Define co prime

Posted by Dev Ji 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Yuv Raj Singh 7 years, 8 months ago

Pair of two prime numbers are called to prime

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Komal Arora 7 years, 8 months ago

Co prime are those pair of numbers which have a common factor as 1 ex- 15=3×5×1 16=4×3×1

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if two positive integers a and b are written as : a = x 3y2and b= xy2; x, y are prime numbers , then find the HCF of a and b

Posted by Dev Ji 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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What is an equation

Posted by Taro Riang 7 years, 8 months ago

CBSE > Class 10 > Mathematics

3 answers

Khushi Mahal 7 years, 8 months ago

The chemical equation represented by the name of reactant and product then it is called as equation .

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Khushi Mahal 7 years, 8 months ago

These are called balanced equation

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Raghav Sharma 7 years, 8 months ago

L. H. S. = R. H. S. A statement in which many variables along with numerous numbers gives out the terms of rhs.. Such that LHS=RHS...

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Vijay had some banana and he divided them into two lots A B he sold the first lot at the rate of rs 2 for 3 banana and the second at the rate of rs 1 per banana and got a total of rs 400 if ha had sold rhe first lot at the the rate of 1 per banana and second foe ra 4 fir 5 banana then his collection is 460 find the total number of banana

Posted by Shreyansh Agrawal 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Syllabus for sa1

Posted by Mohd Ariz 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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What is long division method

Posted by Punjabi And 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Punjabi And 7 years, 8 months ago

Punjabi

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Koi Bata skta Hai Kya class 10 ka result kab ayega

Posted by Diksha Gyamnani 7 years, 8 months ago

CBSE > Class 10 > Mathematics

7 answers

Diksha Gyamnani 7 years, 8 months ago

Hello guys

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Diksha Gyamnani 7 years, 8 months ago

I think yuvraj tum abhi class 10 mai aaye ho kyonki Mene class 10 ka paper de Diya h

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Yuv Raj Singh 7 years, 8 months ago

Paper hone ke baad

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Aashu Singh 7 years, 8 months ago

Second week of may

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Diksha Gyamnani 7 years, 8 months ago

Thanks jashan

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Jashan Judge 7 years, 8 months ago

Abhi tak date final nhi hui

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Diksha Gyamnani 7 years, 8 months ago

Koi mere question ka bhi jawab do

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If A,Bal and C are interior angles of a triangle ABC then show that sin[B+C ÷2] =cos A÷2

Posted by Srushti Kunkolienkar 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Lipsa Rani 7 years, 8 months ago

180-(B+C)=A Cos(90-(B+C)÷2=Cos (A÷2) Sin (B+C÷2)=Cos (A÷2)

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For any positive interger n prove that N3-n is divisibile by 6

Posted by Sunny Gupta 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Divison 5

Posted by Sahil Budiraja 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Nee loose

Posted by Bhavithra Bhavi 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Is it possible to correct DOB in class 10

Posted by Rahul Kumar 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Lovely Khatri 7 years, 8 months ago

Yes you are genius

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Difference between two numbers is 30.Seven times smaller number is equal to twice the greater number. Find the numbers.

Posted by Srushti Kunkolienkar 7 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Lipsa Rani 7 years, 8 months ago

Let greater number is x and smaller number is y, 7y=2x, Y=2x÷7, X-y=30, X-2x÷7=30, 7x-2x=210, 5x=210, X=210÷5, X=42, y=42-30=12.

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Srushti Kunkolienkar 7 years, 8 months ago

Please answer my question

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In exercise 3.4 O1 part 3 why did we multiplied eqation1 with 3

Posted by Abhishek Kotnala 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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Page number 35 maths class solution

Posted by Cp Shah 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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CBSE 2017-18 year board paper

Posted by Rudra Sharma 7 years, 8 months ago

CBSE > Class 10 > Mathematics

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A+B2+80+90=100

Posted by Manish Khurana 5 years, 8 months ago

CBSE > Class 10 > Mathematics

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What is meant by alpha

Posted by Sameer Sameer 7 years, 8 months ago

CBSE > Class 10 > Mathematics

1 answers

Ritik Madan 7 years, 8 months ago

Alpha also stands for thermal expansion coefficient of a compound in physical chemistry. It is also commonly used in mathematics in algebraic solutions representing quantities such as angles.

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Wgfagh

Posted by Aditya Raj Yadav 7 years, 8 months ago

CBSE > Class 10 > Mathematics