we know that
in the right triangle of the figure
Applying the Pythagorean Theorem

therefore
the answer is the option
C) 
Answer:

Step-by-step explanation:
solving for dy/dx
multiply the equation out to remove parentheses

now differentiating in terms of x (
)

isolating dy/dx to one side



5 dollars per hour
because 15 divided by 3 is 5.
Answer:
I do believe that the answer would be 56%
Step-by-step explanation:
Using estimation if the box is half full it would have 4.5 books in the box, if you add that extra book it would be around 56%