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Multiply the following: (2x – 2y – 3), (x + y +

asked Jan 18, 2022 in 8th-maths by Simran (1.8k points)

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Using suitable identities, evaluate the following.

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Using suitable identities, evaluate the following.

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Using suitable identities, evaluate the following. `105 xx

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

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Factorise the following. `y^2 + 18x +

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Factorise the following. `y^2 + 4y –

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Find the value of a, if `pq^2a = (4pq + 3q)^2 – (4pq –

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Express `16/18` and `(-16)/18` as powers of a rational

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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By what number should we multiply `(–29)^0` so that the product becomes

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Express each of the following in standard form: -1. (a) The mass of a proton in gram is `1673/1000000000000000000000000000` (b) A Helium atom has a diameter of 0.000000022

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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If `(5^m xx 5^3 xx 5^(-2))/5^-5 = 5^12`, find

asked Jan 18, 2022 in 8th-maths by yogita (1.8k 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 18, 2022 in 8th-maths by sumit (1.6k 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 18, 2022 in 8th-maths by Arun (1.7k points)

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The given table shows the crop production of a State in the year 2008 and 2009. Observe the table given below and answer the given questions. Crop 2008 Harvest (Hectare) Increase/Decrease (Hectare) in 2009 Bajra `1.4 × 10^3` – 100 Jowar `1.7 × 10^6` -440,000 Rice `3.7 × 10^3` – 100 Wheat `5.1 × 10^5` + 190,000 (a) For which crop(s) did the production decrease? (b) Write the production of all the crops in 2009 in their standard form. (c) Assuming the same

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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If the cost price of 10 shirts is equal to the selling price of 8 shirts, then which of the following is true for the

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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The compound interest on Rs 8,000 for one year at 16% p.a. compounded half yearly is _________, given that `(1.08)^2 =

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Abida bought 100 pens at the rate of Rs 3.50 per pen and pays a sales tax of 4%. The total amount paid by Abida is

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the

asked Jan 18, 2022 in 8th-maths by Simran (1.8k points)

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If 25 metres of cloth costs Rs 337.50, then (i) What will be the cost of 40 metres of the same type of cloth? (ii) What will be the length of the cloth bought for Rs

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Ms. Anita has to drive from Jhareda to Ganwari. She measures a distance of 3.5 cm between these villages on the map. What is the actual distance between the villages if the map scale is 1 cm = 10

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

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