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elixir [45]
3 years ago
11

A student claimed 7 and -7 are the two cube roots of 343 . Do you agree or disagree ? Explain .

Mathematics
1 answer:
dmitriy555 [2]3 years ago
4 0
I disagree. Only 7 is a cube root of 343 (7 x 7 x 7) because -7 is a cube root of -343 (-7 x -7 x -7)
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Ann [662]

In 8 years Damon will be 16 year's old.

We have Nora who 3 time as old as Damon and in 8 years she will be only 2 time as old as Damon.

We have to determine how old will Damon  be in 8 years.

<h3>If your present age is x and your sister is 4 years elder than you. Than what will be her age after 5 years from now.</h3>

Your present age = x.

Hence, your sister's present age = x + 4.

After five years, your age = x + 5.

Hence, your sister's age will be = x + 9.

According to question, we have -

Assume that the present age of Damon is x.

Then, Nora's age will be = y = 3x.

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Damon's age = x + 8

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Therefore -

3x + 8 = 2(x + 8)

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x = 8

Hence, in 8 years Damon will be = 8 + 8 = 16 year's old.

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6 0
1 year ago
I WILL GIVE BRAINLEST
Allushta [10]

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Answer for points
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3 years ago
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