The bookstore has 10 copies left.
Step- By- Step Explanation
After the first day, 1/3 of the original amount remained: (1/3)·45 = 15
After the second day, 2/3 of that amount remained: (2/3)·15 = 10
If x-y=2 then x=2+y
And if you insert that in the first equation




Or

The first one is bigger so the answer is
Answer:
Step-by-step explanation:
2
From this diagram, you can see that a square is a quadrilateral, a parallelogram, a rectangle, and a rhombus!
Answer:
P(E or F)=P(E)+P(F)=0.41+0.47=0.88