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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `8a^3 –

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

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Factorise the expressions and divide them as directed: `(x^2 – 22x + 117) -: (x –

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

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Factorise the expressions and divide them as directed: `(9x^2 – 4) -: (3x +

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

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Factorise the expressions and divide them as directed: `(3x^4 – 1875) -: (3x^2 –

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

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The base of a parallelogram is (2x + 3 units) and the corresponding height is (2x – 3 units). Find the area of the parallelogram in terms of x. What will be the area of parallelogram of x = 30

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

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

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

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Verify the following: `(a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) =

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

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

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

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The standard form of `(1/100000000)` is

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

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The usual form of `2.39461 xx 10^6` is

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

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The standard form for 32,50,00,00,000 is

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

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The value of `[3^(–1) xx 4^(–1)]^2` is

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

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The multiplicative inverse of `(3/2)^2` is not equal to

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

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Express `(1.5 xx 10^6)/(2.5 xx 10^(-6))` in the standard

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

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`(125 xx x^(-3))/(5^(-3) xx 25 xx

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

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The cells of a bacteria double itself every hour. How many cells will there be after 8 hours, if initially we start with 1 cell. Express the answer in

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

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An insect is on the 0 point of a number line, hopping towards 1. She covers half the distance from her current location to 1 with each hop. So, she will be at `1/2` after one hop, `3/4` after two hops, and so on. (a) Make a table showing the insect’s location for the first 10

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

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Fill in the blanks

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

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The distance between the Sun and the Earth is `1.496 xx 10^8` km and distance between the Earth and the Moon is `3.84 xx 10^8` m. During solar eclipse the Moon comes in between the Earth and the Sun. What is distance between the Moon and the Sun at that particular

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

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The food labels given below give information about 2 types of soup: cream of tomato and sweet corn. Use these labels to answer the given questions. (All the servings are based on a 2000 calorie diet.) (a) Which can be measured more accurately : the total amount of fat in cream of tomato soup or the total amount of fat in sweet corn soup? Explain. (b) One serving of cream of tomato soup contains 29% of the recommended daily value of sodium for a 2000 calorie diet. What is the recommended daily value of sodium in milligrams? Express

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

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