X=18 and y=10 because they are both 90degree angles therefore all you have to do is solve the equations: 5x=90 and 9y=90.
Answer: d. 39.3 inches
Step-by-step explanation:
Given the measurement of central angle (
) and the measure of radius (15 inches), the lenght of the intercepted arc in the circle can be calculated with the formula:

Where r represents the radius of the circle and
the central angle.
Substituting
and
into the formula
:

Given:
The function is:

To find:
The zeroes of the given function by using the Method of Completing the square.
Solution:
We have,

It can be written as:

By Method of Completing the square add and subtract square of half of coefficient of x in the parenthesis.


![[\because (a+b)^2=a^2+2ab+b^2]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%28a%2Bb%29%5E2%3Da%5E2%2B2ab%2Bb%5E2%5D)


For zeroes, F(x)=0.




Taking square root on both sides, we get


and 
and 
Therefore, the zeroes of the given function are -0.45 and -5.55.