She has a total of 45 CDS.
One Shelf Have 15 Cds
Multiply 15 x 3 and you have 45 CDs total
Answer:
(See explanation for further details)
Step-by-step explanation:
The standard equation of the parabola is:

The formula is now expanded into a the form of a second-order polynomial:


The general equation of the second-order polynomial is:




The equations to be solved are presented herein:


Now, the solution of the system is:






The equation of the parabola is:

Lastly, the graphic of the function is included as attachment.
We are tasked to solve for the smallest angle using the law of cosines given that the three sides of the triangle are 4,5 and 6.
a=4 , b=5, c=6
Angle 1:
cosA = 5² + 6² - 4² / 2*5*6
A=41.41°
Angle 2:
cos B = 4²+6² -5² /2*4*6
B= 55.77°
Angle C:
C = 180° - 41.41° - 55.77°
C = 82.82°
The smallest angle is A which is equal to 41.41°.