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If m – n = 16 and `m^2 + n^2 = 400`, then find

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

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Verify the following: `(ab + bc) (ab – bc) + (bc + ca) (bc – ca) + (ca + ab) (ca – ab) =

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

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Verify the following:

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

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Find the value of a, if `8a = 35^2 –

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

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Find the value of a, if `pqa = (3p + q)^2 – (3p –

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

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Subtract `b (b^2 + b – 7) + 5` from `3b^2 – 8` and find the value of expression obtained for `b = –

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

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Simplify

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

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In `2^n`, n is known

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

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The value of `3^5 -: 3^(–6)`

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

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The value of `(–2)^(2xx3–1)`

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

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Which of the following is equal to `(-3/4)^(-3)`

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

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

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

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The standard form for 234000000

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

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`(-8/2)^0 =

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

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

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

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Find the multiplicative inverse of `(–7)^(–2) -:

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

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Write 0.000005678 in the standard

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

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A half-life is the amount of time that it takes for a radioactive substance to decay to one half of its original quantity. Suppose radioactive decay causes 300 grams of a substance to decrease to `300 xx 2^(–3)` grams after 3 half-lives. Evaluate `300 xx 2^(–3)` to determine how many grams of the substance are left. Explain why the expression `300 xx 2^(–n)` can be used to find the amount of the substance that remains after n

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

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

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

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Simplify:

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

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