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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 17, 2022 in 8th-maths by Arun (1.7k points)

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

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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Factorise the following, using the identity `a^2 + 2ab + b^2 = (a + b)^2` `x^2 + 14x +

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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Factorise the following, using the identity `a^2 + 2ab + b^2 = (a + b)^2` `x^2 + 2x +

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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Take suitable number of cards given in the adjoining diagram [G`(x xx x)` representing `x^2`, R `(x xx 1)` representing x and Y `(1 xx 1)` representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: (i) `2x^2 + 6x + 4` (ii) `x^2 + 4x + 4`. Factorise `2x^2 + 6x + 4` by using the figure.

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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`(1/10)^0` is equal

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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Express each of the following in standard form: -1. (a) The mass of a proton in gram is `1673/1000000000000000000000000000` (b) A Helium atom has a diameter of 0.000000022

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per d`m^2` is Rs 11,750, find the dimensions of the

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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Locate the points A (1,2), B (4,2) and C (1,4) on a graph sheet taking suitable axes. Write the coordinates of the fourth point D to complete the rectangle

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages. Age (in years) 8 9 10 11 12 13 14 15 16 17 18 Boys 72% 75% 78% 81% 84% 88% 92% 95% 98% 99% 100% Girls 77% 81% 84% 88% 91% 95% 98% 99% 99.5% 100% 100% Draw the line graph of above data on the same sheet and answer the following questions.

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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Write. The rational numbers that are equal to their

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions.

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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A bag has 4 red balls and 2 yellow balls. (The balls are identical in all respects other than colour). A ball is drawn from the bag without looking into the bag.What is probability of getting a red ball? Is it more or less than getting a yellow

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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How many numbers lie between squares of the following numbers? 12 and 13

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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How many numbers lie between squares of the following numbers? 99 and

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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Find the square roots of 100 and 169 by the method of repeated

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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2025 plants are to be planted in a garden in such a way that each row contains as many plants as the number of rows. Find the number of rows and the number of plants in each

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Find the number of digits in the square root of each of the following numbers (without any calculation). 64

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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Find the least number which must be added to each of the following numbers so as to get a perfect square. Also find the square root of the perfect square so obtained. 1750

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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In a right triangle ABC, ∠B = 90°. If AC = 13 cm, BC = 5 cm, find

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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