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Simplify and express the result in power notation with positive exponent. `2^(– 3) xx (–7)^(–

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

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Simplify. `(25xxt^(-4))/(5^(-3)xx10xxt^(-8))

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

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Express the following numbers in standard form. 6020000000000000

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

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Following are the car parking charges near a railway station upto 4 hours Rs 60 8 hours Rs 100 12 hours Rs 140 24 hours Rs 180Check if the parking charges are in direct proportion to the parking

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `–121p^3q^3r^3 -:

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

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The sum of first n natural numbers is given by the expression `n^2/2+n/2`. Factorise this

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

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The height of a triangle is `x^4 + y^4` and its base is 14xy. Find the area of the

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

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

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

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Verify the following: `(7p – 13q)^2 + 364pq = (7p +

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

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Find the value of a, if `pq^2a = (4pq + 3q)^2 – (4pq –

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

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The value of `1/4^-2`

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

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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 by nikhil (1.8k points)

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The multiplicative inverse of `(3/2)^2` is not equal to

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

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`(2/3)^(-2) xx (2/3)^(-5) =

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

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Simplify: -1. `(2^5 -: 28) xx

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

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Find the value of x so that `(2^(–1) + 4^(–1) + 6^(–1) + 8^(–1))x =

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

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The cells of a bacteria double in every 30 minutes. A scientist begins with a single cell. How many cells will be there after (a) 12 hours (b) 24

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

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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 by Simran (1.8k points)

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