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By what number should `(–8)^(–3)` be multiplied so that that the product may be equal to

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

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Find x -1. (1) `-(1/7)^(-5) -: -(1/7)^(-7) = (-7)^x` (2) `(2/5)^(2x+6) xx (2/5)^3 =

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

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If a = – 1, b = 2, then find the value of the following: (1) `a^b + b^a` (2) `a^b – b^a` (3) `a^b xx b^2` (4) `a^b ¸

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

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Express each of the following in exponential form: (1) `(-1296)/14641` (2) `(-125/343)` (3) `400/3969` (4)

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

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Simplify: `(1/2)^2-(1/4)^(3-1) =

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

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Simplify:

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

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Simplify: `(4/13)^4 xx (13/7)^2 xx

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

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Simplify: `(1/5)^45 xx (1/5)^(-60) - (1/5)^+28 xx

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

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Simplify: `((9) xx 27 xx t^4)/((3)^(-2) xx (3)^4 xx

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

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Simplify: `((3^-2)^2 xx (5^2)-3 xx (t^(-3))^2)/((3^(-2))^5 xx (5^3)^(-2) xx

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