Answer:
Step-by-step explanation:
![5x^2-20y^2\\=5(x^{2} -4y^2)\\=5[x^{2} -(2y)^2]\\=5(x+2y)(x-2y)](https://tex.z-dn.net/?f=5x%5E2-20y%5E2%5C%5C%3D5%28x%5E%7B2%7D%20-4y%5E2%29%5C%5C%3D5%5Bx%5E%7B2%7D%20-%282y%29%5E2%5D%5C%5C%3D5%28x%2B2y%29%28x-2y%29)
94/120=0.7833333333333333......
he spented 78.3333333333333....% of what he estimated
Unit rate = 3.49/22 = $0.16
Answer:
Hello,
Step-by-step explanation:
we must first remember that:

Let say t=sin(x)

Answer:
x+11 = 5x - 5
Step-by-step explanation:
x+
11
=
5
x
−
5
Subtract x from both sides
11
=
4
x−
5
Add 5 to both sides
16
=
4
x
Divide both sides by 4
x=4