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The standard form for 32,50,00,00,000 is

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

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

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

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`a^p xx b^q =

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

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The standard form for 203000 is `2.03 xx

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

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Express `16/18` and `(-16)/18` as powers of a rational

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

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An insect is on the 0 point of a number line, hopping towards 1. She covers half the distance from her current location to 1 with each hop. So, she will be at `1/2` after one hop, `3/4` after two hops, and so on. (a) Make a table showing the insect’s location for the first 10

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

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If 12 pumps can empty a reservoir in 20 hours, then time required by 45 such pumps to empty the same reservoir is ______

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

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The area of a square is given by `4x^2 + 12xy + 9y^2`. Find the side of the

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

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What should be added to `4c (– a + b + c)` to obtain `3a (a + b + c) – 2b(a – b +

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

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The value of `[3^(–1) xx 4^(–1)]^2` is

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

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The usual form for `2 xx 10^(–2)` is not equal to

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

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Fill in the blanks

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

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Repeater Machine Similarly, repeater machine is a hypothetical machine which automatically enlarges items several times. For example, sending a piece of wire through a `(xx 2^4)` machine is the same as putting it through a (xx 2) machine four times. So, if you send a 3 cm piece of wire through a `(xx 2^4)` machine, its length becomes `3 xx 2 xx 2 xx 2 xx 2 = 48` cm. It can also be written that a base (2) machine is being applied 4 times. What will be the new length of a 4 cm strip inserted in

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

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A particular star is at a distance of about `8.1 xx 10^13` km from the Earth. Assuring that light travels at `3 xx 10^8` m per second, find how long does light takes from that star to reach the

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

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5% sales tax is charged on an article marked Rs 200 after allowing a discount of 5%, then the amount payable is

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

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Extend the line segment on both sides to meet the coordinate axes. What are the coordinates of the points where this line meets the x -axis and the

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

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The following graph shows the number of people present at a certain shop at different times. Observe the graph and answer the following questions. (a) What is the busiest time of day at the shop?(b) How many people enter the shop when it opens?(c) About how many people are

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

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A point in which the x-coordinate is zero and y-coordinate is nonzero will lie on the

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

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If abc, cab, bca are three digit numbers formed by the digits a, b, and c then the sum of these numbers is always divisible by

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

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