Answer:
x + 8 + 12 + 11 = 43
Step-by-step explanation:
The perimeter is the length of the 4 sections of fencing.
If x represents the fourth section and the perimeter is 43, then
x + 8 + 12 + 11 = 43, that is
x + 31 = 43 ( subtract 31 from both sides )
x = 12
The length of the fourth section is 12 ft
Answer:
Periodic
Step-by-step explanation:
Because the terms repeat, this is a periodic sequence.
Use the ratio of cosine.
cos x = adj/hyp
cos 60 = x/14
14 (cos 60) = x
7 = x
length of DF is 7.
Hope this helps :)
15 - 9 + 2.65 + 1.35 + 3.48
6 + 2.65 + 1.35 + 3.48
8.65 + 1.35 + 3.48
10 + 3.48
13.48