85 * 0.20 = 17
85 - 17 = $68
He paid $68 for the jacket
Answer:
Step-by-step explanation:
You know the lengths of two sides and the angle between them, so use the Law of Cosines to find the third side.
x^2 = 10.5^2+ 5.4^2 -2(10.5)(5.4)cos20°
x ≈ 5.73 units
For number 2 it's would be 12.8
Sorry I don't have time for number 3
Y-5= 3(x-0)
Y-5= 3x
Y= 3x + 5
Hope this helps!
Tax she will pay would be $2.04