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Ask QuestionPosted by Veerendra Karoshi 5 years, 5 months ago
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Posted by Mohith N 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Let the present age of Rahul be x years and Haroon be y years
Ratio of their ages = 5:7
x/y=5/7
⇒x=5y/7 ⋯(1)
x+4+y+4=56
x+y=48
From equation (1) x=5y/7
5y/7 + y = 48
12y=7×48
y=28
put y = 28 in equation (1)
x=20
Age of Rahul is 20 years and Haroon is 28 years.
Posted by Yajo Mara 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
A Pythagorean triple consists of three positive integers a, b, and c, such that a2 + b2 = c2. Such a triple is commonly written (a, b, c), and a well-known example is (3, 4, 5). If (a, b, c) is a Pythagorean triple, then so is (ka, kb, kc) for any positive integer k. The square of the length of the hypotenuse of a right triangle is the sum of the squares of the lengths of the two sides. This is usually expressed as a2 + b2 = c2. Integer triples which satisfy this equation are Pythagorean triples. The most well known examples are (3,4,5) and (5,12,13).
Posted by Priyanshi Srivastava 5 years, 5 months ago
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Akanksha Verma 5 years, 5 months ago
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Preety Sood 5 years, 5 months ago
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Jaspreet Kaur 5 years, 5 months ago
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Krishang Patil 5 years, 5 months ago
Sonika V 5 years, 5 months ago
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Sia ? 4 years, 7 months ago
let the smaller number = x
bigger number = 5x. (we need this.)
if 21 is added to both; 5x+21 = 2×(x+21)
5x + 21 = 2x + 42
5x - 2x = 42 - 21
3x =. 21
x = 21/3= 7
So the positive number is = 5×7 = 35
answer is 35
Posted by Nishant Maru 5 years, 5 months ago
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Palak Khandal 5 years, 5 months ago
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Insha Fatima 5 years, 5 months ago
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Posted by Richa Mittal 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The Cramer's Rule uses determinants to solve a linear system of equations.
Cramer's Rule
Sometimes using matrix algebra or inverse matrices to find the solution to a system of linear equations can be tedious. Sometimes it is more convenient to use Cramer's Rule and determinants to solve a system of equations. Finding determinants becomes much more difficult with higher dimensions, and so Cramer's Rule is better for smaller systems of linear equation.
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Yogita Ingle 5 years, 5 months ago
∴ 22222 is not a perfect square. Since, the ending digit is 2 (which is not one of 0, 1, 4, 5, 6 or 9).
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Yogita Ingle 5 years, 5 months ago
X + x + 2 + x + 4 = 24
= 3x + 6 = 24
= 3x = 24-6
= 3x = 18
= x = 18/3
= x = 6
∴ the 3 consecutive even nos. are 6, 6+2=8 and 6+4 = 10
= 6,8 and 10
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