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Find the value of a, if `8a = 35^2 –

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

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`(-5/7)^(-5)` is equal

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

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`((-7)/5)^(-1)` is equal

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

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`(–9)^3 -: (–9)^8` is equal

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

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For a non-zero integer x, `(x^4)^(–3)` is equal

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

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For a non-zero rational number z, `(z^-2)^3` is equal

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

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`a^3 xx a^(–10)` =

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

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Very large numbers can be expressed in standard form by using _________

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

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Express `3^(–5) xx 3^(–4)` as a power of 3 with positive

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

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Find the product of the cube of (–2) and the square of

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

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Simplify: -1. `(1/4)^(-2) + (1/2)^(-2) +

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

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At the end of the 20th century, the world population was approximately `6.1 xx 10^9` people. Express this population in usual form. How would you say this number in

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

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Use the properties of exponents to verify that each statement is true. (a) `1/4(2^n) = 2^(n-2)` (b) `4(n-1) = 1/4(4)^n` (c) `25(5^(n–2)) =

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

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Two machines can be hooked together. When something is sent through this hook up, the output from the first machine becomes the input for the second. (a) Which two machines hooked together do the same work a `( xx 10^2)` machine does? Is there more than one arrangement of two machines that will work? (b) Which stretching machine does the same work as two `(xx 2)` machines hooked together?

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

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What will the following machine do to a 2 cm long piece of chalk?

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

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Ajay had a 1cm piece of gum. He put it through repeater machine given below and it came out `1/100,000 cm` long. What is the missing value?

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

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Find a single machine that will do the same job as the given hook-up. (a) a`(xx 2^3)` machine followed by `(xx 2^(–2))` machine. (b) a`(xx 2^4)` machine followed by `(xx(1/2)^2)` machine (c) a`(xx 5^99)` machine followed by a `(5^(–100))`

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

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For each hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it (a) (b) (c) (d)(e)

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

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Shikha has an order from a golf course designer to put palm trees through a `(xx 2^3)` machine and then through a `(xx 3^3)` machine. She thinks she can do the job with a single repeater machine. What single repeater machine should she use?

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

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Find two repeater machines that will do the same work as a `(xx 81)`

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

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