Recent questions tagged chapter8

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By what number should `(–8)^(–3)` be multiplied so that that the product may be equal to

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

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Find x -1. (1) `-(1/7)^(-5) -: -(1/7)^(-7) = (-7)^x` (2) `(2/5)^(2x+6) xx (2/5)^3 =

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

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If a = – 1, b = 2, then find the value of the following: (1) `a^b + b^a` (2) `a^b – b^a` (3) `a^b xx b^2` (4) `a^b ¸

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

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Express each of the following in exponential form: (1) `(-1296)/14641` (2) `(-125/343)` (3) `400/3969` (4)

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

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Simplify: `(1/2)^2-(1/4)^(3-1) =

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

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Simplify:

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

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Simplify: `(4/13)^4 xx (13/7)^2 xx

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

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Simplify: `(1/5)^45 xx (1/5)^(-60) - (1/5)^+28 xx

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

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Simplify: `((9) xx 27 xx t^4)/((3)^(-2) xx (3)^4 xx

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

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Simplify: `((3^-2)^2 xx (5^2)-3 xx (t^(-3))^2)/((3^(-2))^5 xx (5^3)^(-2) xx

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

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A picnic is being planned in a school for Class VII. Girls are 60% of the total number of students and are 18 in number. The picnic site is 55 km from the school and the transport company is charging at the rate of Rs 12 per km. The total cost of refreshments will be Rs 4280.Can you

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

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The cost per head if two teachers are also going with the

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

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If their first stop is at a place 22 km from the school, what per cent of the total distance of 55 km is this? What per cent of the distance is left to be

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

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Find the ratio of the following. Speed of a cycle 15 km per hour to the speed of scooter 30 km per

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

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Find the ratio of the following. 5 m to 10 km

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

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Find the ratio of the following. 50 paise to Rs

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

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Convert the following ratios to percentages. 3 : 4

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

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Convert the following ratios to percentages. 2 :

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

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72% of 25 students are good in mathematics. How many are not good in

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

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A football team won 10 matches out of the total number of matches they played. If their win percentage was 40, then how many matches did they play in

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

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