Answer:
3
Step-by-step explanation:
Remark
Let the pigs = p
Let the chickens = c
Givens
30 heads is another way of saying that there were 30 creatures in the barnyard. In addition each chicken has 2 legs and each pig has 4
c + p = 30
2C + 4P = 100 (2) Divide (2) by 2
C + 2P = 50 (3) Subtract (1) from (3)
<u>C + P = 30</u>
P = 20
So there were 20 pigs.
Answer:
y=-1/3x+1
Step-by-step explanation:
(picture explains)
0.0069
Step-by-step explanation:
6.9 move the decimal 3 places to the left
-11+square root of 19/ 20 , -11- square root of 19/ 20