Questions by nishit

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A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time the length of the shadow cast by another pole 10 m 50 cm high

asked Jan 18, 2022 in 8th-maths

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A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time the height of a pole which casts a shadow 5m

asked Jan 18, 2022 in 8th-maths

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6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take if only 5 pipes of the same type are

asked Jan 18, 2022 in 8th-maths

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 7x +

asked Jan 17, 2022 in 8th-maths

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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

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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

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The radius of a circle is 7ab – 7bc – 14ac. Find the circumference of the circle.

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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The value of `3^5 -: 3^(–6)`

asked Jan 17, 2022 in 8th-maths

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The multiplicative inverse of `(-5/9)^-99`

asked Jan 17, 2022 in 8th-maths

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For a non-zero integer x, `(x^4)^(–3)` is equal

asked Jan 17, 2022 in 8th-maths

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`(3/4)^5 -: (5/3)^5` is equal

asked Jan 17, 2022 in 8th-maths

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The value for `(–7)^6 -: 7^6` is

asked Jan 17, 2022 in 8th-maths

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`24.58 = 2 xx 10 + 4 xx 1 + 5 xx 10 + 8 xx

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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Express `3^(–5) xx 3^(–4)` as a power of 3 with positive

asked Jan 17, 2022 in 8th-maths

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Express as a power of a rational number with negative exponent. (a) `(((-3)/2)^(-2))^(-3)` (b) `(2^5 -: 2^8) xx

asked Jan 17, 2022 in 8th-maths

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Simplify: -1. `(49 xx z^(-3))/(7^(-3) xx 10 xx z^(-5))`

asked Jan 17, 2022 in 8th-maths

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Find the value of `x^(–3)` if `x = (100)^(1–4) -:

asked Jan 17, 2022 in 8th-maths

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