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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: `(a – b) (a – b) (a – b) = a^3 – 3a^2b + 3ab^2 –

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

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In `2^n`, n is known

asked Jan 17, 2022 in 8th-maths by nishit (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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The reciprocal of `(2/5)^-1`

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

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`[2^(–1) + 3^(–1) + 4^(–1)]^0` =

asked Jan 17, 2022 in 8th-maths by yogita (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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Divide 293 by 10,00,000 and express the result in standard

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

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

asked Jan 17, 2022 in 8th-maths by sumit (1.6k 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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An inch is approximately equal to 0.02543 metres. Write this distance in standard

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

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While studying her family’s history. Shikha discovers records of ancestors 12 generations back. She wonders how many ancestors she has had in the past 12 generations. She starts to make a diagram to help her figure this out. The diagram soon becomes very complex. (a) Make a table and a graph showing the number of ancestors in each of the 12

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

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Fill in the blanks

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

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There are 864,00 seconds in a day. How many days long is a second? Express your answer in scientific

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

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

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

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