Answer:
4/10 meters
Step-by-step explanation:
Original Length : 7/10 meters
Remaining Length after cut : 3/10 meters
amount cut off = original length - remaining length
= 7/10 - 3/10
= (7-3)/ 10
= 4/10
(1) it can be both exterior of vertex or base. 180-130=50°
vertex is 50°: base=(180-50)/2=65°
base is 50°: vertex= 180-2*50=80°
vertex 50 base 65; vertex 80, base 50
(2)base=180-130=50°
vertex=180-2*50=80°
base 50 vertex 80
Example
6.
3/8+1/4+__=1
1/4 is the same like 2/8
3/8+2/8=5/8
5/8+__=1
1 is the same like 8/8
5/8+__=8/8
8/8-5/8=_
8/8-5/8=3/8
Blank field-> 3/8