1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirza4 [7]
3 years ago
5

Ratio and proportions The library at school is organized by fiction and non fiction books. There are 3 non fiction books for eve

ry 7 fiction books. How many total books are there if the library has 240 non fiction books?
Mathematics
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer:

In the library there are in total 800 books.

Step-by-step explanation:

The number of non fiction books  = 3 for every 7 fiction books.

⇒Ratio of Non Fiction :  Fiction books  = 3   : 7

Now, The total Non fiction books in library  = 240

Let the total number of fiction books in the library = m

⇒Ratio of Non Fiction :  Fiction books  in Library  = 240   : m

Now, By THE RATIO OF PROPORTIONALITY:

\frac{3}{7}   = \frac{240}{m}

or, m= \frac{240 \times 7}{3}  = 560

⇒ m = 560

or, the number of fiction books in library = 560

So,the total number of books in library

=  Fiction books  +  Non - fiction books

 = 560 + 240 = 800

Hence, in the library there are in total 800 books.

You might be interested in
Answer quickly 8x + 2y + 9 + 12x − 3
prohojiy [21]
20x + 2y + 6 (simplified)
6 0
3 years ago
Read 2 more answers
Complete the following equation using <,>, or = 7___24/4
olga2289 [7]

Answer:

<

Step-by-step explanation:

Have a Great Day!!!

8 0
3 years ago
I need help with number 3 please and thank you
murzikaleks [220]
So here we're dealing with equivalent fractions.
It's really simple to find the answer, so I'll try to explain the best I can.

2 dogs / 5 cats is really just 2/5.
If we want to find an equivalent fraction, we have to multiply the numerator and the denominator by the same number.

Currently the number of cats is 5, and we need it to be 140. What we need to do is find the number it has to be multiplied by to equal 140, which is 140 divided by 5. 140 divided by 5 is 28, so 5 x 28 = 140!

We need to multiply the denominator (5) by 28, so that we can get 140. What we have now is ?/140.

Like I said, to find an equivalent fraction, we need to multiply the numerator by the same number as we did the denominator, which is 28!

2 x 28 = 56.

So 2/5 is the same as 56/140.

The answer is D) 56 Dogs/140 Cats.

Hope this helps!
If you're confused about anything leave me a reply and I'll try to explain the best that I can!
3 0
2 years ago
20% of dash is equal to 140M
AlexFokin [52]

ANSWER: The length of the entire dash is 700 meters.

EXPLANATION:

Because 20% of the dash equals 140 meters, we can use a variable to figure out the length of the entire dash.

Let x be the length of the entire dash.

.2x = 140\\\\x = 700

The length of the entire dash is 700 meters.

7 0
3 years ago
Observe the expression below and select the true statement(s).
DENIUS [597]

Answer: The 9 in the second term is a coefficient that is true. I think that is the only thing that is true. There may be one more thing that is true.

The 10 in the third term is not  a coefficient.

The 2 is not a constant

the x is not an exponent.

those are the ones that I'm sure about.

Please correct anything if i'm wrong.

:)

7 0
3 years ago
Other questions:
  • Help plz !!!!!!!!!!!!!!!!!
    13·2 answers
  • Evaluate the expression: 6x + 5 - 3y, when y = 3 and x = -2
    5·1 answer
  • Please answer this in two minutes
    11·1 answer
  • NEED HELP NOW FUNCTIONS DONT SKIP
    7·2 answers
  • 2/3 of all your boks are fiction 1/6 of those are historical fiction. what fraction of all your books are historical fiction ​
    9·1 answer
  • Drag the operator to the correct location on the image. Which operation results in a trinomial?
    11·1 answer
  • A recipe used 2/3 cup of sugar for every 2 teaspoons of vanilla. How much sugar was used per teaspoon of vanilla?
    7·1 answer
  • Need help please it’s due today show work
    7·1 answer
  • Find the value of x.
    14·1 answer
  • Is g correct? I need help in this
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!