The angles are complementary.
1 Lb is equal to 0.453592 Kg.
Therefore 8.5 Kg is equal to 18.7 Lbs. If you round 18.7 you get 19 Lb.
1. order pairs : (3,1), (-2,-1)
1 + 1 / 3 + 2 = 2 / 5 is the slope
2. order pairs : (2,-3), (-3,2)
-3 - 2 / 2 + 3 = - 5 / 2 is the slope
3. order pairs : (1,3), (-1,-2)
3 + 2 / 1 + 1 = 5 / 2 is the slope
I used the slope formula to get my answers.
Let the number of goats be 'x'.
Therefore, the number of chicken will be 50-x
Total number of legs the goats will have= 4x (goats have 4 legs)
Total number of legs chickens will have= 2(50-x) (chickens have two legs).
4x + 2(50-x)=140
4x+100-2x=140
2x+100=140
2x=40
x=20.
There are 20 goats and 30 chickens.
