Recent questions tagged chapter9

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The product of two expressions is `x^5 + x^3 + x`. If one of them is `x^2 + x+ 1`, find the

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

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Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.

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

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The figure shows the dimensions of a wall having a window and a door of a room. Write an algebraic expression for the area of the wall to be painted.

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

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Match the expressions of column I with that of column II: Column I Column II (1) `(21x + 13y)^2` (a) `441x^2 – 169y^2` (2) `(21x – 13y)^2` (b) `441x^2 + 169y^2 + 546xy` (3) `(21x – 13y) (21x + 13y)` (c) `441x^2 + 169y^2 – 546xy` (d) `441x^2 – 169y^2 + 546xy`

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

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A shirt with marked price Rs 800 was sold at Rs 680. The rate of discount allowed on the shirt

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

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If `7/3%` of a number is 42, then the number

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

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If the cost price of 10 shirts is equal to the selling price of 8 shirts, then which of the following is true for the

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

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Rs 1600 lent at a compound interest of 5% per annum, compounded half yearly for one year will amount

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

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By selling 50 pens, a shopkeeper lost the amount equal to the selling price of 10 pens. His loss per cent is

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

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The discount per cent is calculated on the _________ price of an

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

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Amna purchased a toy for Rs 660 including sales tax. If the rate of sales tax is 10%, then the selling price of the toy is

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

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When the interest is compounded half yearly, the number of conversion periods in a year is

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

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Arnav buys a book costing Rs 600. If the rate of sales tax is 7%, then the total amount payable by him is Rs

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

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After allowing a discount of 15% on the marked price of an article, it is sold for Rs 680. The marked price of the article is Rs

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

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Overhead charges, if any, are sometimes included in the cost

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

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A number is increased by 20% and then it is decreased by 20%. Find the net increase or decrease per

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

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Vishakha offers a discount of 20% on all the items at her shop and still makes a profit of 12%. What is the cost price of an article marked at Rs

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

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Find the compound interest on Rs 48,000 for one year at 8% per annum when compounded half

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

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Suppose for the principal P, rate R% and time T, the simple interest is S and compound interest is C. Consider the

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

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