You do -2 plus 4. Answer is 2.
Then do 2-(-2) which is 0.
The final answer is 2.
16: B; irrational number, real
17: C; whole, integer, rational, real
18: B; real, rational, integer
Answer:

Step-by-step explanation:
Given that,
The radius of circle, r = 50 feet
The central angle, 
We need to find the area of the sector of a circle. The formula for the area of sector is given by :

So, the area f the sector of the circle is
.
Answer:
136
Step-by-step explanation:
hyo^2=opp^2+adj^2
x^2=6^2+10^2
x^2=36+100
x^2=136
x=
