Please comment this in english.
Answer:
$56.33
Step-by-step explanation:
30% off of $69.98 is ($49.99) then add 15% which makes it $56.33 .!
The perimeter of triangle is: 14.15 units
Step-by-step explanation:
First of all we have to find the lengths of sides of triangles
Given
A(3, 1), B(2, -1), and C(-3, 2)
The distance formula will be used to find the lengths of sides
![d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\](https://tex.z-dn.net/?f=d%20%3D%20%5Csqrt%7B%28x_2-x_1%29%5E2%2B%28y_2-y_1%29%5E2%7D%5C%5C)
So,
![AB = \sqrt{(2-3)^2+(-1-1)^2}\\=\sqrt{(-1)^2+(2)^2}\\=\sqrt{1+4}\\=\sqrt{5}\\=2.24\ unitsBC = \sqrt{(-3-2)^2+(2+1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\= 5.83\ units\\AC = \sqrt{(-3-3)^2+(2-1)^2}\\=\sqrt{(-6)^2+(1)^2}\\=\sqrt{36+1}\\=\sqrt{37}\\=6.08\ units](https://tex.z-dn.net/?f=AB%20%3D%20%5Csqrt%7B%282-3%29%5E2%2B%28-1-1%29%5E2%7D%5C%5C%3D%5Csqrt%7B%28-1%29%5E2%2B%282%29%5E2%7D%5C%5C%3D%5Csqrt%7B1%2B4%7D%5C%5C%3D%5Csqrt%7B5%7D%5C%5C%3D2.24%5C%20unitsBC%20%3D%20%5Csqrt%7B%28-3-2%29%5E2%2B%282%2B1%29%5E2%7D%5C%5C%3D%5Csqrt%7B%28-5%29%5E2%2B%283%29%5E2%7D%5C%5C%3D%5Csqrt%7B25%2B9%7D%5C%5C%3D%5Csqrt%7B34%7D%5C%5C%3D%205.83%5C%20units%5C%5CAC%20%3D%20%5Csqrt%7B%28-3-3%29%5E2%2B%282-1%29%5E2%7D%5C%5C%3D%5Csqrt%7B%28-6%29%5E2%2B%281%29%5E2%7D%5C%5C%3D%5Csqrt%7B36%2B1%7D%5C%5C%3D%5Csqrt%7B37%7D%5C%5C%3D6.08%5C%20units)
The perimeter of triangle will be:
![P = AB+BC+AC\\= 2.24+5.83+6.08\\=14.15\ units](https://tex.z-dn.net/?f=P%20%3D%20AB%2BBC%2BAC%5C%5C%3D%202.24%2B5.83%2B6.08%5C%5C%3D14.15%5C%20units)
Hence,
The perimeter of triangle is: 14.15 units
Keywords: Triangle Perimeter
Learn more about perimeter at:
#LearnwithBrainly
Answer:
4(9-n)
Step-by-step explanation:
A square is made up of 4 equal sides all you would have to do to find the perimeter is divided 86 by 4 and that equals 21.5
21.5 should be your answer