Answer:
Height of the tree is 50 ft.
Step-by-step explanation:
AB/DE =BC/EC
ratio is x/5 = 120/12
x/5 = 10
x=50
Answer: 12.5
area= 1/2 (2.5+7.5) 2.5
sorry if its not clear enough i dont really know how else to explain it
a) 3x + ky = 8
ky = 8 - 3x
x – 2ky = 5
x - 2(8 - 3x) = 5
x - 16 + 6x = 5
7x = 21
x = 3 (shown)
b) x-2ky = 5
sub x = 3, y = 1/2
3-2k(1/2) = 5
-2k = 2
k = -1
2(6e-3f+10g)
Answer (I think): 12e-6f+20g
Answer:x
=4
permiter=6
area=24
