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I have a total of Rs 300 in coins of denomination Re 1, Rs 2 and Rs 5. The number of Rs 2 coins is 3 times the number of Rs 5 coins. The total number of coins is 160. How many coins of each denomination are with

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

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A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the

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

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Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present

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

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What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and

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

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How many sides does a regular polygon have if the measure of an exterior angle is

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

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What is the minimum interior angle possible for a regular polygon?

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

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Subtract `5x^2 – 4y^2 + 6y – 3` from `7x^2 – 4xy + 8y^2 + 5x –

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

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Use a suitable identity to get each of the following products. (2y + 5) (2y + 5)

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

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Look at the given map of a city. Answer the following.-(a) Colour the map as follows: Blue-water, red-fire station, orange-library, yellow - schools, Green - park, Pink - College, Purple - Hospital, Brown - Cemetery.-(b) Mark a green ‘X’ at the intersection of Road ‘C’ and Nehru Road, Green ‘Y’ at the intersection of Gandhi Road and Road A.-(c) In red, draw a short street route from Library to the bus depot.-(d) Which is further east, the city park or the market?-(e) Which is further south, the primary school or the Sr. Secondary

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

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There is a regular hexagon MNOPQR of side 5 cm .Aman and Ridhima divided it in two different

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

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Find the height of a cylinder whose radius is 7 cm and the total surface area is 968

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

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Express the following numbers in usual form. `3 xx 10^(–

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

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Express the following numbers in usual form. `5.8 xx 10^(12)`

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

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A train is moving at a uniform speed of 75 km/hour. Find the time required to cover a distance of 250

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

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Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him bycompleting the following table. sss 8 → 45°, 10 → 36°, 12 → 30° sss Calculate the angle between

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

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A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the

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

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The expression for `3^5` with a negative exponent is

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

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

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

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The standard form for 0.000037 is `3.7 xx

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

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One Fermi is equal to `10^(–15)` metre. The radius of a proton is 1.3 Fermis. Write the radius of a proton in metres in standard

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

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