Recent questions tagged marks2

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A photographer uses a computer program to enlarge a photograph. What is the scale according to which the width has enlarged?

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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The side of a square board is 50 cm. A student has to draw its image in her notebook. If the drawing of the square board in the notebook has perimeter of 40 cm, then by which scale the figure has been

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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The distance between school and house of a girl is given by 5 cm in a picture, using the scale 1 cm : 5 km. Find the actual distance between the two

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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Use a ruler to measure the distance in cm between the places joined by dotted lines. If the map has been drawn using the scale 1 cm :10 km, find the actual distances between (1) School and Library (2) College and Complex (3) House and School

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

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The actual length of a painting was 2 m. What is its length in the photograph if the scale used is 1 mm : 20 cm.

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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Find the scale. (a) Actual size 12 m Drawing size 3 cm (b) Actual size 45 feet Drawing size 5

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Simplify (i) `– pqr (p^2 + q^2 + r^2)` (ii) (px + qy) (ax –

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Verify that`(3x + 5y)^2 – 30xy = 9x^2 +

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Verify that `(11pq + 4q)^2 – (11pq – 4q)^2 =

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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Add: `7a^2bc, – 3abc^2, 3a^2bc,

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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Add: 9ax, + 3by – cz, – 5by + ax +

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Add: `xy^2z^2 + 3x^2y^2z – 4x^2yz^2, – 9x^2y^2z + 3xy^2z^2 +

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Add: `5x^2 – 3xy + 4y^2 – 9, 7y^2 + 5xy – 2x^2 +

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Add: `2p^4 – 3p^3 + p^2 – 5p +7, –3p^4 – 7p^3 – 3p^2 – p –

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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Add: 3a (a – b + c), 2b (a – b +

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Subtract : `5a^2b^2c^2` from `–

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Subtract : `6x^2 – 4xy + 5y^2` from `8y^2 + 6xy –

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Subtract : `2ab^2c^2 + 4a^2b^2c – 5a^2bc^2` from `–10a^2b^2c + 4ab^2c^2 +

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Subtract : `3t^4 – 4t^3 + 2t^2 – 6t + 6` from `– 4t^4 + 8t^3 – 4t^2 – 2t +

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Subtract : `2ab + 5bc – 7ac` from `5ab – 2bc – 2ac +

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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