Answer:
Step-by-step explanation:
Let's solve this problem step-by-step. The library had 1,500 books in 2011. The ratio of books in 2011 and in 2012 is 1:2. Therefore, let the number of books in 2012 be 
.
We have the following proportion:
Therefore, there were 3,000 books in 2012. The ratio of books in 2012 and in 2013 is 2:5. Let the number of books in 2013 be 
.
We have:
Therefore, there were 7,500 books in 2013.
The answer is m= -13
because 32-45=-13
Answer: 4 x (12 - 8)
Step-by-step explanation:
the word difference really means exactly what it is saying. it is the quantity difference between two numbers. like, if someone would say, "what's the difference between 4 and 2?' then you would just subtract 2 from 4 to find the difference between the two numbers.
so, we now know that we are going to be subtracting 8 from 12.
plus, it tells us to show 4 times 12 - 8. that means that we will be multiplying (12 - 8) by 4.
so, our only viable option is 4 x (12 - 8).
Simply plug in -15 for x in our given equation.
-x + 2y = -1
-(-15) + 2y = -1
Simplify.
15 + 2y = -1
Subtract 15 from both sides.
2y = -1 - 15
Simplify.
2y = -16
Divide both sides by 2
Y = -8
Hope I helped :)
Answer:
I'd guess B and D
Step-by-step explanation:
