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Obtain the product of `2, 4y, 8y^2,

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

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Multiply the binomials. (a + 3b) and (x +

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

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Using Identity (III), find

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

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Using `(x + a) (x + b) = x^2 + (a + b) x + ab`, find `103 xx 98`

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

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Is a square prism same as a cube?

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

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Can a polyhedron have 10 faces, 20 edges and 15

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

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Diagram of the adjacent picture frame has outer dimensions =`24 cm xx 28 cm` and inner dimensions 16 cm xx 20 cm. Find the area of each section of the frame, if the width of each section is same.

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

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A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is

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

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A godown is in the form of a cuboid of measures `60 m xx 40 m xx 30 m`. How many cuboidal boxes can be stored in it if the volume of one box is 0.8 `m^3`

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

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Find the height of the cylinder whose volume is 1.54 m3 and diameter of the base is 140 cm

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

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Simplify and express the result in power notation with positive exponent. `(– 4)^5 ÷ (–

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

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Express the following numbers in usual form. `3.02 xx 10^(– 6)`

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

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A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, whatwould be its enlarged

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

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A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5

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

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A contractor estimates that 3 persons could rewire Jasminder’s house in 4 days. If, he uses 4 persons instead of three, how long should they take to complete the

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

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Using suitable identities, evaluate the following. `105 xx

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

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Using suitable identities, evaluate the following. `(339)^2 –

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

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Factorise the following expressions. `l2m^2n – lm^2n^2–

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

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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 by purvi (1.8k points)

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Solve the following:(i) `100^(–10)` (ii) `2^(–2) xx 2^(–3)` (iii) `(1/2)^(-2) -:

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

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