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Explain why (17 × 11 × 2 + 17 × 11 × 5) is a composite number

Posted by Akshan Kotecha 1 year, 6 months ago

1 answers

(17 × 11 × 2 + 17 × 11 × 5 ) = 17 × 11 ( 2 + 5 ) {explanation : taking 17 and 11 as common } = 187 ( 2 + 5 ) here 187 is a factor of (17 × 11 × 2 + 17 × 11 × 5 ) so we can say that (17 × 11 × 2 + 17 × 11 × 5 ) is composite number because it has factor other than 1

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Prove that √2 is irrational

Posted by Piyush Sahu 1 year, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Aditya Singh 1 year, 6 months ago

Prove that root 2 is an irrational number. Rational numbers are integers that are expressed in the form of p / q where p and q are both co-prime numbers and q is non-zero. Answer: Hence proved that √2 is an irrational number. Let's find if √2 is irrational. Explanation: To prove that √2 is an irrational number, we will use the contradiction method. Let us assume that √2 is a rational number with p and q as co-prime integers and q ≠ 0 ⇒ √2 = p/q On squaring both sides we get, ⇒ 2q2 = p2 ⇒ Here, 2q2 is a multiple of 2 and hence it is even. Thus, p2 is an even number. Therefore, p is also even. So we can assume that p = 2x where x is an integer. By substituting this value of p in 2q2 = p2, we get ⇒ 2q2 = (2x)2 ⇒ 2q2 = 4x2 ⇒ q2 = 2x2 ⇒ q2 is an even number. Therefore, q is also even. Since p and q both are even numbers, they have 2 as a common multiple which means that p and q are not co-prime numbers as their HCF is 2. This leads to the contradiction that root 2 is a rational number in the form of p/q with "p and q both co-prime numbers" and q ≠ 0. Thus, √2 is an irrational number by the contradiction method.

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3x+4y-7=0 2x+y+2=0

Posted by S K 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Taxi charges in a city contains fixed charge and additional charge per kilometre.the charge for this to some 10 km is rupees 350 and for 25 km is 800 find the charge for distance of 30 km

Posted by Tanuja Kusalkar 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

2x+3y=8

Posted by Sidra Rani 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Elimination method 4x+3y=24and3y-2x=6

Posted by G.Charan Charan Teja Raju 1 year, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Vedshree Patil 1 year, 6 months ago

X=9y=4

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Sagar Kuntal 1 year, 6 months ago

4x+3y=24 -[(-2x)+3y]=-6 4x+3y=24 2x-3y=-6 4x+2x+3y-3y=24-6 6x=18 x=18/6 x= 3 2(3)-3y=-6 6-3y=-6 -3y=-12 y=-12/-3 y=4

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solve the following system of linear equation graphically 2x-3y-17=0 and 4x+y-13=0. shade the region bounded by the above lines and x-axis

Posted by Nitin Kumar 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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X+y-8 \2=x+2y-14/3=3x+y-12/11

Posted by Sakshi Pandey 1 year, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Ankit Class 1 year, 6 months ago

Give space and use bracket because not understand

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0.4x+0.3y=1.7 and 0.7x-0.2y=0.8 solve by elimination

Posted by Diya Paruthi 1 year, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Aman Yadav 1 year, 6 months ago

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876

Posted by Tannu Rajput 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Prime factor 5005

Posted by G.Charan Charan Teja Raju 1 year, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Akshita Akshita 1 year, 6 months ago

5×7×11×13

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G.Charan Charan Teja Raju 1 year, 6 months ago

Prime factor 5005

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5005

Posted by G.Charan Charan Teja Raju 1 year, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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10+20+46+81+83+398

Posted by Kamal Kama 1 year, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Akshita Akshita 1 year, 6 months ago

638

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What is Elemination method?

Posted by Yash Thakur 1 year, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Sadhvi Tiwari 1 year, 6 months ago

A very easy method first u have to make coefficient same of any one veriable by multiplying the coefficient of 2nd in 1st or 1st in 2nd (in whole equation) then add or subtract to cancel one variable then find the value of another variable now put the value of another variable in eq then u get the value of other that is an elimination method ..........hope understood

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31x + 43y = 117 43x + 31y = 105

Posted by Kanika Mehra 1 year, 6 months ago

CBSE > Class 10 > Mathematics