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slava [35]
3 years ago
11

A library contains 2000 books. there are 3 times as many non-fiction books as fiction books. write and solve a system of equatio

ns to determine the number of non-fiction and fiction books.
Mathematics
1 answer:
Svetllana [295]3 years ago
4 0
X = fiction books

3x = nonfiction books

x + 3x = 2000

After you solve for x, (which is the number of fiction books), you can plug its value into the equation for nonfiction books (3x) and that will give you the number of non fiction books.
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Please choose all irational thx ^_^
lana66690 [7]

Answer:

Here is a note to help you: Most numbers are rational numbers. Here is how you know when a number is rational or not [especially if its a decimal].

Rational:

- Decimals are usually rational. Rational decimals my look like this:

1) 0.25

2) 0.333333333...

3) 0.234234234234234234...

The following above are rational because they either: terminate or repeat. That being said, 1) terminates, and 2) and 3) repeat because the pattern of 2) is just 3's, and the pattern of 3) is 0.234 over and over again.

Irrational:

- Irrational numbers are numbers that don't repeat, and don't terminate. The next examples are irrational:

1) 0.234536718092343...

2) 8.123456789023452574794832468...

3) 1723456.4356784794954233690422...

- They go on forever and ever, and don't have a pattern/terminate like rational numbers.

Now that you've got that in the bag, its time for your answers!

Step-by-step explanation:

A) rational --> It has a pattern, but does not terminate

B) rational --> It terminates

C) irrational --> it does not have a pattern, even if it does terminate

D) rational --> when you solve it, the answer is 2, and 2 is rational

E) irrational --> it does not have a pattern, but does terminate

I hope I helped you! This took forever, but it was worth it! :D

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

<u></u>

6 0
3 years ago
I need help with this question
ahrayia [7]

Answer:

l:6   w:9

Step-by-step explanation:

<u>        54        </u>

 1          54

 2         27

 3          18

 6          9

8 0
2 years ago
Which equation, in point-slope form, passes through (-2, 4) and has a slope of 3?
MA_775_DIABLO [31]

Answer:

B. Y-4 =3(x+2)

7 0
3 years ago
Johnny wanted to rent out a Pizza place for his birthday party. They charged $25 for the room plus $7 PER person (p). Write an e
emmasim [6.3K]
That the equation 25+7(C)
8 0
3 years ago
Is it A) , B) , C), D) , E)
Mrac [35]

Answer:

Part A) The statement is True

Part B) The statement is False

Part C) The statement is True

Part D) The statement is True

part E) The statement is False

Step-by-step explanation:

Part A) we have

1.66..=1 \frac{6}{9}

The statement Is True

Convert the repeating decimal 1.66.. to an equivalent fraction

Let

x=1.66..\\ 10x=16.66..\\ 10x-x=16.66..-1.66..\\ 9x=15\\ x=15/9

Convert to mixed number

15/9=9/9+6/9=1 \frac{6}{9}

therefore

1.66..=1 \frac{6}{9}

Part B) we have

0.6 < 6\%

The statement is false

Because

6\%=6/100=0.06

so

substitute

0.6 < 0.06 -----> is not true

Part C) we have

45\% \leq4.5

The statement is True

Because

45\%=45/100=0.45

substitute

0.45 \leq4.5 ----> is true

Part D) we have

5^{2} \geq 16

The statement is True

Because

5^{2}=25

substitute

25 \geq 16 ----> is true

Part E) we have

9.25 > 9\frac{3}{4}

The statement is false

Because

Convert mixed number to an improper fraction

9\frac{3}{4}=\frac{9*4+3}{4}=\frac{39}{4}

Convert decimal number to an improper fraction

9.25=9\frac{1}{4}=\frac{9*4+1}{4}=\frac{37}{4}

substitute

\frac{37}{4} > \frac{39}{4} -----> is not true

8 0
3 years ago
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