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The expression for `4^(–3)` as a power with the base 2 is

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

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Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In each of the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them. If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue

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

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Take suitable number of cards given in the adjoining diagram [G`(x xx x)` representing `x^2`, R `(x xx 1)` representing x and Y `(1 xx 1)` representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: (i) `2x^2 + 6x + 4` (ii) `x^2 + 4x + 4`. Factorise `2x^2 + 6x + 4` by using the figure.

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

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On dividing `8^5` by _________ we get

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

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A store is having a 25% discount sale. Sheela has a Rs 50 gift voucher and wants to use it to buy a board game marked for Rs 320. She is not sure how to calculate the concession she will get. The sales clerk has suggested two ways to calculate the amount payable. - Method 1: Subtract Rs 50 from the price and take 25% off the resulting price. - Method 2: Take 25% off the original price and then subtract Rs 50. a. Do you think both the methods will give the same result? If not, predict which method

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

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A rectangular sheet of dimensions `25 cm xx 7 cm` is rotated about its longer side. Find the volume and the whole surface area of the solid thus

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `16x^4 –

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

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Factorise the expressions and divide them as directed: `(x^4 – 16) -: x^3 + 2x^2 + 4x +

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

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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 by nishit (1.8k points)

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Verify the following: `(a + b + c) (a^2 + b^2 + c^2 – ab – bc – ca) = a^3 + b^3+ c^3 –

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

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`3^(–2)` can be written

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

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`[2^(–1) + 3^(–1) + 4^(–1)]^0` =

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

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By multiplying `(5/3)^4` by ________ we get

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

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On dividing `8^5` by _________ we get

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

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`5^0 =

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

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The value of `(1/4)^(-2)` is equal to

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

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`a^p xx b^q =

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

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`6^n/6^(-2) =

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

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Planet A is at a distance of `9.35 xx 10^6` km from Earth and planet B is `6.27 xx 10^7` km from Earth. Which planet is nearer to

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

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