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3 years ago

Evaluate x+x-x for x=4

Mathematics

1 answer:

Dafna1 [17]3 years ago

3 0

The answer is x=4 because 4+4 is 8 and 8 minus 4 is 4

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if you want to buy a shirt that cost 18.99 but you have 20% off coupon and the tax is 7%. how much does the shirt cost

dusya [7]

20% off means you pay 80% of the price so you multiply by 0.8, and 7% tax means you multiply by 1.07

Resulting cost = 18.99*0.8*1.07 = 16.26

Hope this helps let me know if im wrong!

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Select all the inrational numbers from the list

snow_tiger [21]

B is one.

A < C and D are rational

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Answer:

Step-by-step explanation:

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ozzi

Your answer is 1.3249751e+19

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Rewrite as a simplified fraction.

Mnenie [13.5K]

Answer:

$\bold{x = \dfrac{8}{9}}$

Step-by-step explanation:

We have to rewrite the below as simplified fraction.

$\large{0.\overline{8} = {?}}$

Solution:

Let $x =0.\overline 8$ which means $x =0.888888.......$

Here a bar over 8 means that there the given decimal value is non terminating and there are a large numbers of 8 present after the decimal.

To solve the given non terminating decimal as fractions, we will have to eliminate the bar term from the given value.

So, we can rewrite $x$ as:

$x =0.8\overline8$ ......(1)

Now, let us multiply the above with 10.

$10x = 0.8\overline 8 \times 10\\\Rightarrow 10 x= 8.\overline8$ ....... (2)

Now, let us subtract (1) from (2):

$10x-x=8.\overline8 - 0.\overline8\\\Rightarrow 9x = 8\\\Rightarrow \bold{x = \dfrac{8}{9}}$

So, in simplified fractions:

$\large{0.\overline{8} = \bold{\dfrac{8}{9}}}$

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3 years ago