30×30=900
900/112.5=8 cameras to cover
112.5×4=450
900-450=450 ft left uncovered
16
Place in ascending order: 4 6 8 15 15 17 17 18 20 20
middle numbers = 15 and 17
(15+17)/2 = 16
Since x=8/3 is a vertical line,the slope is undefined,
What is the situation from the problem
< ABC is a straight angle
no right angles
no complimentary angles
< ABD and < DBC are supplementary angles
