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Find the value of a, if `9a = 76^2 –

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k 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 17, 2022 in 8th-maths by uday (1.6k points)

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`(–10) xx (–10) xx (–10) xx (–10) =

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

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If `36 = 6 xx 6 = 62`, then `1/36` expressed as a power with the base 6 is

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

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`3^5 -: 3^–6` can be simplified as

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

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The value of `[3^(–1) xx 4^(–1)]^2` is

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

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By solving `(6^0 – 7^0) xx (6^0 + 7^0)` we get

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

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The standard form for 0.000037 is `3.7 xx

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

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Express `(1.5 xx 10^6)/(2.5 xx 10^(-6))` in the standard

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

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`6^n/6^(-2) =

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

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`(125 xx x^(-3))/(5^(-3) xx 25 xx

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

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Find a single repeater machine that will do the same work as each hook-up. (a) (b) (c) (d) (e) (f)

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

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The marked price of an article is Rs 80 and it is sold at Rs 76, then the discount rate

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

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Amount when interest is compounded annually is given by the formula

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

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Sales tax = tax % of

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

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Percentages are _________ to fractions with _________ equal to

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

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The cost of a tape-recorder is Rs 10,800 inclusive of sales tax charged at 8%. The price of the tape-recorder before sales tax was charged is

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

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In 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000. Find the per cent increase in the consumption of water from 1975 to 2000. Also, find the annual per cent increase in consumption (assuming water consumption increases

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

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If 5 persons can finish a job in 10 days then one person will finish it in 2

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

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A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3`

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

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