Answer:
Step-by-step explanation:
The ratio of the number of fiction books is 9:4
the difference between the number of fiction and nonfictionn is 245
so if the number of fiction books = 9x
then the number of nonfiction books = 4x
then difference = 9x-4x = 5x
the difference is given 245
then 5x= 245
x=
=49
number of fiction books =49×9=441
number of nonfiction books =49×4=196
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Answer:
21 plays a sport and takes a foreign language.
17 takes a language and does not play a sport.
12 play a sport and don't take language.
4 student don't do either
Step-by-step explanation:
Answer:
a.
Step-by-step explanation:
The following information is missing in the question:
<em>What does 6 1/2 mean in this situation</em>
<em>
a. Zhen spends 6 1/2 hours working for every hour of the completed audiobook.
</em>
<em>b. Zhen completes 6 1/2 audiobooks in an hour.
</em>
<em>c. Zhen spends 6 1/2 hours working per audiobook.</em>
It means that Zhen needs 6 1/2 working hours to record 1 hour of the audiobook. Zhen needs to work more than one hour to record one hour of the audiobook, because besides recording, he also needs to research and edit.
Answer:
1/3
Step-by-step explanation:
Line C to B is 9 long while Line C' to B' is 3.
That's a 1/3 reduction
Answer:
The simplified expression is:

Step-by-step explanation:
We have those following logarithmic properties:



In this problem, we have that:


So the simplified expression is
