Answer:
Step-by-step explanation:
We use the quadratic formula here which says for a quadratic equation 
.
Now in our case
so we have:
Which are our solutions.
Cosine law
a²=b²+c²-2ab*cosA
a²=13²+11²-2*13*11*cos(108)≈378.37
a≈19.45
The answer is: 30 skiers were participating in the ski trip.
Method:
$50S = $1,850 - $350 = $1,500
S = 1,500/50 = 30
Therefore, 30 skiers went on the trip
Step-by-step explanation:
2(heads) + 2(goats) = 140
Heads are given, so we get:
2(52) + 2(goats) = 140
104 + 2(goats) = 140
2(goats) = 36
goats = 18
Since we know the number of goats, we know the number of chickens.
34Chickens and 18 goats.
Answer:
18:11
Step-by-step explanation:
33÷3=11
54÷3=18
so its 18:11
hope it helped! :D
