It's -6, -4.5, -4.25, -1.5, -1, 0
2x-y=8...(1)
x+y=7....(2)
from (2)
y=7-x....(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5.....(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c:
Answer:
20.
Step-by-step explanation:
Assign variables. The numbers acan be 2x, 3x and 4x. Then, LCM of 2x, 3x and 4x is 12x
12x = 240
(240/12) = x = 20
The HCF of 2x, 3x, and 4x is 20. (Because x is the highest common factor.)
Answer:
71 degrees cause you just do 180-109=71
