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The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest. Distance (m) Time (sec.) Elevator- A Elevator- B Elevator- C Elevator- D 43544813085 2928105 How much distance will be travelled by elevators B and C seperately in 140 sec? Who travelled more and by how

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

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Four horses are tethered with equal ropes at 4 corners of a square field of side 70 metres so that they just can reach one another. Find the area left ungrazed by the

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

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A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of iron used in the

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

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The capacity of a closed cylindrical vessel of height 1 m is 15.4 L. How many square metres of metal sheet would be needed to make

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. `x^2 – 7x +

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

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Factorise the expressions and divide them as directed: `(x^3 + x^2 – 132x) -: x (x –

asked Jan 17, 2022 in 8th-maths by Arun (1.7k 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: `(a + b) (a + b) (a + b) = a^3 + 3a^2b + 3ab^2 +

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

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Find the value of (i) `(6.25 6.25 –1.75 1.75)/4.5` (ii) `(198 198 –102

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

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50 =

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Find the value `[4^(–1) +3^(–1) +

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

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The usual form for `2.3 xx 10^(-10)` is

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

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`(–4)^(–4) xx (4)^(–1) =

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

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`(–2)^0 =

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The value of `5^(–2)` is equal to

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

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Express `27/64` and `(-27)/64` as powers of a rational

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

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A sugar factory has annual sales of 3 billion 720 million kilograms of sugar. Express this number in the standard

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

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A new born bear weighs 4 kg. How many kilograms might a five year old bear weigh if its weight increases by the power of 2 in 5

asked Jan 17, 2022 in 8th-maths by yogita (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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The planet Uranus is approximately 2,896,819,200,000 metres away from the Sun. What is this distance in standard

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

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