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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 Simran (1.8k points)

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Find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube.

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

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- Simplify `a (a^2 + a + 1) + 5` and find its value for (i) a = 0, (ii) a = 1 (iii) a = –

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

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The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor,if the cost per `m^2` is Rs

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

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There are two cuboidal boxes as shown in the adjoining figure. Which box requires the lesser amount of material to

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

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If each edge of a cube is doubled, how many times will its surface area

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

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An electric pole, 14 metres high, casts a shadow of 10 metres. Find the height of a tree that casts a shadow of 15 metres under similar

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k 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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From the following table, determine if x and y are in direct proportion or not. x 3 6 15 20 30 y 12 24 45 60 120

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

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Locate the points P (3,4), Q (1,0), R (0,4), S (4,1) on a graph sheet and write the coordinates of the point of intersection of line segments PQ and

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

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Sonal and Anmol made a sequence of tile designs from square white tiles surrounding one square purple tile. The purple tiles come in many sizes. Three of the designs are shown below.(a) Copy and complete the table Side Length of Purple 1 2 3 4 5 10 100 Number of white Tiles (b) Draw a graph using the first five pairs of numbers in your table.(c) Do the points lie on a

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

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Fill in the blanks. The product of two rational numbers is always a

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

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Without adding, find the sum. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17

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

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Three consecutive integers add up to 51. What are these

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

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The sum of three consecutive multiples of 8 is 888. Find the

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

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Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present

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

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The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. Find their present

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

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Vasudevan invested Rs 60,000 at an interest rate of 12% per annum compounded half yearly. What amount would he get after 1

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

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Simplify. `(7m – 8n)^2 + (7m +

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

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For each of the given solid, the three views are given. Identify for each solid the corresponding top, front and side views. A Match

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

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