The square root of a circle would be your answer because 4.2-8
Hi there! :)

Find the central angle using a ratio in regards to angle and circumference.
The radius is 27 units, so use the following equation to calculate circumference:
C = 2rπ
Therefore:
C = 2(27)π = 54π
Since we have the total circumference, we can write the following proportion:

Cross multiply:
54πx = 6480π
Divide both sides by 54π to isolate for x:
x = 120°
Answer:
Josh had $500
Karen had $100
Step-by-step explanation:
J = 5K
J - 20 = 6(K - 20)
5K - 20 = 6K - 120
100 = K
J = 500
The molar mass of N2O5 (Dinitrogen pentoxide) is 108.01 g/mol.
Let's expand first:

Simplify (combine like terms):


So, your most simplified answer is
18z(z-1) or
18z²-18z.