Questions by purvi

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Verify the following:

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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What should be added to `4c (– a + b + c)` to obtain `3a (a + b + c) – 2b(a – b +

asked Jan 17, 2022 in 8th-maths

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Factorise `p^4 + q^4 +

asked Jan 17, 2022 in 8th-maths

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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

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`((-7)/5)^(-1)` is equal

asked Jan 17, 2022 in 8th-maths

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`[2^(–1) + 3^(–1) + 4^(–1)]^0` =

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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The standard form for 203000 is `2.03 xx

asked Jan 17, 2022 in 8th-maths

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Express `16^(–2)` as a power with the base

asked Jan 17, 2022 in 8th-maths

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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

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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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What will the following machine do to a 2 cm long piece of chalk?

asked Jan 17, 2022 in 8th-maths

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A particular star is at a distance of about `8.1 xx 10^13` km from the Earth. Assuring that light travels at `3 xx 10^8` m per second, find how long does light takes from that star to reach the

asked Jan 17, 2022 in 8th-maths

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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 17, 2022 in 8th-maths

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To gain 25% after allowing a discount of 10%, the shopkeeper must mark the price of the article which costs him Rs 360

asked Jan 17, 2022 in 8th-maths

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Discount = _________ –

asked Jan 17, 2022 in 8th-maths

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_________ expenses are the additional expenses incurred by a buyer for an item over and above its cost of

asked Jan 17, 2022 in 8th-maths

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