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Standard VII

Mathematics

Algebra Generalized Arithmetic

Which of the ...

Question

Which of the following is correct unchanging relation of perimeter of rectangle with length x and breadth as y?

2x+2y = (2x+y)

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2x+2y = 2(x+y)

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2x+2y = (2x-y)

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2x+2y = 4(x+y)

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Solution

The correct option is B
2x+2y = 2(x+y)

The unchanging relation of perimeter is given by 2x+2y = 2(x+y).

Suggest Corrections

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Which of the following pairs of linear equations is inconsistent?
$1. x + 3 y - 5 = 0, 2 x + y = 0$
$2. 2 x + y = 1, 2 y = 2 - 4 x$
$3. 2 x - y = 2, 2 y - 4 x = 2$

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(i) 2x + y = 5 ; 3x

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(iii) x + y = 11 ; 2x

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(iv) 2x + y =

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(v) 2x

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(vi) x

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Q. The factors of x² + 4y² + 4y − 4xy − 2x − 8 are

(a) (x − 2y −4) (x − 2y + 2)

(b) (x − y + 2) (x − 4y − 4)

(c) (x + 2y − 4) (x + 2y + 2)

(d) none of these

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Which of the following is correct unchanging relation of perimeter of rectangle with length x and breadth as y?

The correct option is B 2x+2y = 2(x+y) The unchanging relation of perimeter is given by 2x+2y = 2(x+y).

The correct option is B
2x+2y = 2(x+y)

The unchanging relation of perimeter is given by 2x+2y = 2(x+y).