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3 years ago

For what value of x is the rational expression below undefined 2x+4 / x-7

Mathematics

1 answer:

Dima020 [189]3 years ago

4 0

<span> 7 because it causes the denominator to be 0. </span>

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4 years ago

Is 9 7/8 irrational or rational?

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3 years ago

Question 1 of 16

irga5000 [103]

None of the alternatives are correct. The domain's lower bound is 6, however it contains 6, therefore a bracket is required rather than a parenthesis. [6 (infinity)] Because infinity is not included, a bracket for infinity is invalid. The range is from 0 to infinity. assuming you meant 1/sqr (x-6). However, none of the options are right if you meant 1/(sqr(x) - 6).

or did you mean 1/sqrx - 6? However, none of them are correct.

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2 years ago

.A bucket is filled with 1 3/4 gallons of water. The bucket has a small hole and 1/4 gallon leaks out every hour. How many hours

kenny6666 [7]

Given :

A bucket is filled with 1 3/4 gallons of water.

The bucket has a small hole and 1/4 gallon leaks out every hour.

To Find :

How many hours will it take for the bucket to be completely empty.

Solution :

We know , mixed fraction of form a p/q is given by :

$a\ p/q = \dfrac{(a\times q)+p}{q}$

So, 1 3/4 = 7/4 .

Let, after t hours bucket is empty.

$\dfrac{7}{4}-\dfrac{1}{4}t = 0\\\\t = 7\ hour$

Therefore, it takes 7 hours for the bucket to be completely empty.

Hence, this is the required solution.

7 0

3 years ago