Questions by Simran

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Verify the following: `(m + n) (m^2 – mn + n^2) = m^3 +

asked Jan 17, 2022 in 8th-maths

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If x be any integer different from zero and m be any positive integer, then `x^–m` is equal

asked Jan 17, 2022 in 8th-maths

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If x be any integer different from zero and m, n be any integers, then `(x^m)^n` is equal

asked Jan 17, 2022 in 8th-maths

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`(–9)^3 -: (–9)^8` is equal

asked Jan 17, 2022 in 8th-maths

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For a non-zero rational number p, `p^13 -: p^8` is equal

asked Jan 17, 2022 in 8th-maths

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By multiplying `(10)^5` by `(10)^(–10)` we get

asked Jan 17, 2022 in 8th-maths

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On multiplying _________ by `2^(–5)` we get

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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The expression for `3^5` with a negative exponent is

asked Jan 17, 2022 in 8th-maths

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`(–5)^(–2) xx (–5)^(–3) =

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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The expression for `4^(–3)` as a power with the base 2 is

asked Jan 17, 2022 in 8th-maths

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Simplify: -1. `(1/4)^(-2) + (1/2)^(-2) +

asked Jan 17, 2022 in 8th-maths

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Express the product of `3.2 xx 10^6` and `4.1 xx 10^(–1)` in the standard

asked Jan 17, 2022 in 8th-maths

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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

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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

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By what number should `((-3)/2)^(-3)` be divided so that the quotient may be `(4/27)^(-2)`

asked Jan 17, 2022 in 8th-maths

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Planet A is at a distance of `9.35 xx 10^6` km from Earth and planet B is `6.27 xx 10^7` km from Earth. Which planet is nearer to

asked Jan 17, 2022 in 8th-maths

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This table shows the mass of one atom for five chemical elements. Use it to answer the question given. Element Mass of atom (kg) TitaniumLeadSilverLithiumHydrogen `7.95 × 10^(–26)` `3.44 × 10^(–25) ``1.79 × 10^(–25)``1.15 × 10^(–26)``1.674 × 10^(–27) `

asked Jan 17, 2022 in 8th-maths

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An electron’s mass is approximately `9.1093826 xx 10^(–31)` kilograms. What is this mass in

asked Jan 17, 2022 in 8th-maths

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