Questions by vaibhav

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Simplify and express the result in power notation with positive exponent. `(3^(– 7) ÷ 3^(– 10)) xx 3^(– 5)`

asked Jan 17, 2022 in 8th-maths

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Find the value of.

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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Express the following numbers in standard form. 0.000035

asked Jan 17, 2022 in 8th-maths

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Express the following numbers in standard form.

asked Jan 17, 2022 in 8th-maths

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Express the number appearing in the following statements in standard form. Thickness of a thick paper is 0.07

asked Jan 17, 2022 in 8th-maths

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The cost of 5 metres of a particular quality of cloth is Rs 210. Tabulate the cost of 2, 4, 10 and 13 metres of cloth of the same

asked Jan 17, 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 length of the shadow cast by another pole 10 m 50 cm high

asked Jan 17, 2022 in 8th-maths

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A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80

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 sum of (x + 5) observations is `x^4 – 625`. Find the mean of the

asked Jan 17, 2022 in 8th-maths

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If x – y = 13 and xy = 28, then find `x^2 +

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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asked Jan 17, 2022 in 8th-maths

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Find x so that `(–5)^(x+1) xx (–5)^5 =

asked Jan 17, 2022 in 8th-maths

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The value of `(-2/3)^4` is equal

asked Jan 17, 2022 in 8th-maths

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`5^5 xx 5^(–5)` =

asked Jan 17, 2022 in 8th-maths

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The value of `(1/2^3)^2` is equal to

asked Jan 17, 2022 in 8th-maths

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Very small numbers can be expressed in standard form by using _________

asked Jan 17, 2022 in 8th-maths

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`[(2/13)^(-1) -: (2/13)^3]^3 xx (2/13)^(-13)` =

asked Jan 17, 2022 in 8th-maths

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