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Arada [10]
3 years ago
6

The number 0.7777 repeats forever therefore it is irrational true or false?

Mathematics
1 answer:
DochEvi [55]3 years ago
4 0

Answer:

It's false, this number is a rational number.

Step-by-step explanation:

It's false, the kind of decimal where the same digits repeats forever are known as periodic decimals and they can be represented with fractions therefore they are a part of the rational numbers. To represent this number in a fraction form we need to first identify the part that repeats, in this case it's 7, since it's only one number we can insert it in the numerator and the denominator will have a 9, if it were two numbers the denominator would have a 99 and so on. So in this case:

7/9 = 0.7777...

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ololo11 [35]
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so now you multiply each piece you've connected:
3 x 4= 12
3 x 9i= 27i 
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after  you've done this you can move on to  putting it into standard form, which just means you put things in descending order, depending on how many exponents the x (or in this case i) has.
your largest exponent is 54i^2, so that's first in out equation, next 27i, and 24i (you can combine these because they are like term) which equals 51i, after that you just add the 12 on the end, so the final equation looks like this:

54i^2+51i+12


4 0
4 years ago
A new video game is expected to sell 100 copies the first hour at a local game store. After that, the sales will follow the func
Mazyrski [523]
To answer this you need to make simple thought experiment. Since the number of sales after time passes cannot go negative (note that rate at which copies are sold can drop over time but total number cannot) that means that you are adding number of sales at first hour and during first hour.

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The answer is D)   s(x) = 100 + 12(x-1)
after 1 hour (if you replace x with 1 in equation above) you will get 100 copies which matches conditions in the text.
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Step-by-step explanation:

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prohojiy [21]

Answer:

B. multiply both sides by c.

Step-by-step explanation:

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multiply both sides of the equation by c to isolate x:

(x/c) * c = d * c

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Now x can be solved for.

Hope this helps :)

7 0
2 years ago
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VMariaS [17]

Answer:

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