Answer:
There are 1500 non fiction books and 500 fiction books currently in the store.
Step-by-step explanation:
Given:
Total Number of books = 2000
Let the number of fiction books be 'x'.
Now given:
There are 3 times as many non-fiction books as fiction books.
Number of non fiction books = 
We need to find the number of non-fiction and fiction books.
Solution:
Now we know that;
Total Number of books is equal to sum of the number of non-fiction and fiction books.
framing in equation form we get;

Dividing both side by 4 we get;

Number of fiction books = 500
Number of non fiction books = 
Hence There are 1500 non fiction books and 500 fiction books currently in the store.
Answer: 
<u>Step-by-step explanation:</u>

Answer:
393 more minnows than goldfish
Step-by-step explanation:
add 458 rosy red minnows and 212 white minnows,you get 670.Subtract the 277 goldfish from the 670 minnows and you get 393
The expanded form for this problem is <span><span> 200,000 </span><span>+90,000 +30,000</span><span>+7,000 </span><span>+50 </span><span>+8<span> </span></span></span>
CF=EC=DC
2CF=CD
CD = 20 in.