Example of Roots of Complex Number
(64)1/6={2cis(60k)∘} for k=0,1,2,3,4,5.
Answer:
18.4°
Step-by-step explanation:
Use law of cosine.
a² = b² + c² − 2bc cos A
11² = 20² + 28² − 2(20)(28) cos A
121 = 1184 − 1120 cos A
cos A = 0.949
A = 18.4°
Answer:
Step-by-step explanation:
$515.50
-496.11
_______
$19.39
Equation: 515.50-x=496.11
Answer:12.2%
Step-by-step explanation:
Her total paycheck minus her salary = the commission amount
So
6500 - 1000 = 5500
So....her commission as a percentage of sales = 5500/ 45000 = about 12.2%
Answer: x=2 or x=9
Step-by-step explanation:
Step 1: Factor left side of equation.
(x−2)(x−9)=0
Step 2: Set factors equal to 0.
x−2=0 or x−9=0
x=2 or x=9
