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

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

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The product of two expressions is `x^5 + x^3 + x`. If one of them is `x^2 + x+ 1`, find the

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

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Planet A is at a distance of `9.35 xx 10^6` km from Earth and planet B is `6.27 xx 10^7` km from Earth. Which planet is nearer to

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

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After allowing a discount of 15% on the marked price of an article, it is sold for Rs 680. The marked price of the article is Rs

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

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In 2007 – 08, the number of students appeared for Class X examination was 1,05,332 and in 2008–09, the number was 1,16,054. If 88,151 students pass the examination in 2007–08 and 103804 students in 2008–09. What is the increase or decrease in pass % in Class X

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

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Rain forests are home to 90,000 of the 2,50,000 identified plant species in the world. What per cent of the world’s identified plant species are found in rain

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

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Under the condition that the temperature remains constant, the volume of gas is inversely proportional to its pressure. If the volume of gas is 630 cubic centimetres at a pressure of 360 mm of mercury, then what will be the pressure of the gas if its volume is 720 cubic centimetres at the same

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

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A cuboidal tin box opened at the top has dimensions `20 cm xx 16 cm xx 14 cm`. What is the total area of metal sheet required to make 10 such

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

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From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1

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

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Planet A is at a distance of `9.35 xx 10^6` km from Earth and planet B is `6.27 xx 10^7` km from Earth. Which planet is nearer to

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 vaibhav (1.7k 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 Simran (1.8k points)

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A volleyball court is in a rectangular shape and its dimensions are directly proportional to the dimensions of the swimming pool given below. Find the width of the pool.

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

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External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per d`m^2` is Rs 11,750, find the dimensions of the

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

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Locate the points A (1,2), B (4,2) and C (1,4) on a graph sheet taking suitable axes. Write the coordinates of the fourth point D to complete the rectangle

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

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The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages. Age (in years) 8 9 10 11 12 13 14 15 16 17 18 Boys 72% 75% 78% 81% 84% 88% 92% 95% 98% 99% 100% Girls 77% 81% 84% 88% 91% 95% 98% 99% 99.5% 100% 100% Draw the line graph of above data on the same sheet and answer the following questions.

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

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Find the value of k where 31k 2 is divisible by

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

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Fill in the blanks. Reciprocal of `1/x`, where x ≠ 0 is

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

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A survey was made to find the type of music that a certain group of young people liked in a city.Adjoining pie chart shows the findings of this survey.From this pie chart answer the following:

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

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