Answer:
The awnser is Robi
Step-by-step explanation:
I just took this lesson
Function notation is a way of writing equations that has a form:
f(x)=ax+b, where x is the independent variable, f(x) is the output of the function, a and b are constants.
So if we have an equation: y-x-4=0, first we leave y on the left side and put everything else on the right side:
y=x+4, then we can write it in function notation as:
f(x)=x+4, where f(x) corresponds to y.
Answer:
![A=353\ in^2](https://tex.z-dn.net/?f=A%3D353%5C%20in%5E2)
Step-by-step explanation:
<u><em>The question is</em></u>
A window is shaped like a semicircle with a diameter of 30 inches. What is the area of the window? Round to the nearest square inch
we know that
The area of semicircle is equal to
![A=\frac{1}{2}\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%5Cpi%20r%5E%7B2%7D)
we have
---> the radius is half the diameter
substitute
![A=\frac{1}{2}\pi (15)^{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%5Cpi%20%2815%29%5E%7B2%7D)
![A=112.5\pi\ in^2](https://tex.z-dn.net/?f=A%3D112.5%5Cpi%5C%20in%5E2)
assume
![\pi =3.14](https://tex.z-dn.net/?f=%5Cpi%20%3D3.14)
![A=112.5(3.14)=353,25\ in^2](https://tex.z-dn.net/?f=A%3D112.5%283.14%29%3D353%2C25%5C%20in%5E2)
Round to the nearest square inch
![A=353\ in^2](https://tex.z-dn.net/?f=A%3D353%5C%20in%5E2)
Answer: 30 inches
Step-by-step explanation:
Given:
ABC-tringle
BH= 8 in - height
S= 120 in^2
AC-?
Solution:
S=1/2ab
120in=1/2a*8in
120=4a
4a=120
a=30 in