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sashaice [31]
3 years ago
7

Tania believes that if she increases the price of an item (mark up) by 10% and then decrease it (mark down) by 10%,she will have

the original tag price again. Her teacher tells her that her computation is incorrect. Why is tania wrong? Justify your answer.
Mathematics
1 answer:
dezoksy [38]3 years ago
5 0
She is incorrect as 10% of the higher marked up price is larger than 10% of the original price.

For example: If you mark up $100 by 10% you get $110.

If you mark down $110 by 10%, you will get $99, as 10% of $110 ($11) is larger than 10% of $100 ($10).
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Answer:

The answer is "It has the same domain as the function f(x) = --x".

Step-by-step explanation:

If we consider its parent function that is: y= x

Domain function is: x \in (0, \infty)

The range function is: y \in (0, \infty)

The function has both the same (domain and range).

6 0
3 years ago
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koban [17]
Hi there!

-  \frac{1}{3}  + 4 +  \frac{2}{3}  =
First we rearrange the sum in order to add both of the fractions first. We can rearrange because the only thing we need to do is adding.

-  \frac{1}{3}  +  \frac{2}{3}  + 4 =
Add the fractions.
** If you don't get this, think of this story: you lack 1/3 of an apple pie and someone gives you 2/3 of pie. How much pie do you have left?
- 1 / 3 + 2 / 3 = 1 / 3 **

\frac{1}{3}  + 4 =
Finally add 4 to our found fraction.

\boxed{ 4\frac{1}{3} }
Therefore, the answer is 4 1/3.

5 0
3 years ago
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Troyanec [42]

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6 0
3 years ago
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leonid [27]

Answer:

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Step-by-step explanation:

To determine if (0,0) is a solution to the inequality, substitute 0 for x and 0 for y and check to see. Thus:

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Substitute 0 for x and 0 for y:

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Multiply:

0-0\stackrel{?}{>}20

Subtract:

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So, (0,0) is <em>not</em> a solution.

And we're done!

8 0
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