1/5(25-5a)=4-a
⇔5-a=4-a
NO SOLUTION
Answer: 
Step-by-step explanation:
The formula for the area of a paralellogram is:
bh=a
Where
b is the base (15 for this)
h is the height (5 for this)
and a is the area
Let's sub our values into the formula

Now solve

What does that x2 mean? 2x? or x^2?
-40 over 100, is the answer
Answer:
37 books
Step-by-step explanation: