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Use the Identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following `95 xx

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

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Simplify. `(2.5p – 1.5q)^2 – (1.5p –

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

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Using `a^2 – b^2 = (a + b) (a – b)`, find `153^2 –

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

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Can a polyhedron have for its faces 3 triangles?

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

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A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface ofthe container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the

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

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Find the height of a cuboid whose base area is 180 c`m^2` and volume is 900 cm3

asked Jan 17, 2022 in 8th-maths by sumit (1.6k 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 17, 2022 in 8th-maths by krutika (1.7k points)

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Find five rational numbers between. `2/3` and

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

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For each of the following numbers, find the smallest whole number by which it should be multiplied so as to get a perfect square number. Also find the square root of thesquare number so obtained. 252

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

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The present age of Sahil’s mother is three times the present age of Sahil. After 5 years their ages will add to 66 years. Find their present

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

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The organisers of an essay competition decide that a winner in the competition gets a prize of Rs 100 and a participant who does not win gets a prize of Rs 25. The total prize money distributed is Rs 3,000. Find the number of winners, if the total number of participants is

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

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The diagonal of a quadrilateral shaped field is 24 m and the perpendiculars dropped on it from the remaining opposite vertices are 8 m and 13 m. Find the area of the

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

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Multiplicative inverse of a negative rational number

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

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For every rational number x, x + 1 =

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

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For all rational numbers a, b and c, a (b + c) = ab +

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

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Verify the property `x xx (y xx z) = (x xx y) xx z` of rational numbers by using and What is the name of this property? x = `(-2)/7`, y = `(-5)/6` and z =

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

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The product of two rational numbers is –7. If one of the number is –5, find the

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

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The weekly wages (in Rs.) of 30 workers in a factory are `830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845, 804, 808, 812, 840, 885, 835, 835, 836, 878, 840, 868, 890, 806, 840`. Using tally marks, make a frequency distribution table with class intervals `800 – 810, 810 – 820` and so

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

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Numbers 1 to 5 are written on separate slips, i.e one number on one slip and put in a box. Wahida pick a slip from the box without looking at it. What is the probability that the slip bears an odd

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

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The difference between the upper and lower limit of a class interval is called the __________ of the class

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

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