If you know that b=0, then ab=bc doesn't tell you anything about
'a' or 'c', because no matter what they are, it's always true.
Answer:
D
Step-by-step explanation:
Answer:
4x+12
Step-by-step explanation:

The law of cosines states that:
c^2=a^2+b^2-2abcosC
You already have all the values for the variables with the exception of x so:
x^2=25+100-100cos60
x=√(125-100cos60)
x=√75
x≈8.66 to nearest one-hundredth...
The answer to your question would be
Height=5cm+
(18cm)*(y)