We can create the equation like this:
(x +2) * (x +0)
x^2 + 2x + 0 = 0
I believe it's 12 because 5*16=80. So, then you would subtract 4 from 16 and gat 12.
Answer:
y= -2
Step-by-step explanation:
Please see attached picture for full solution.
(From the 4th to 5th line, I multiplied both sides by 8)
Answer: othingat all
Step-by-step explanation:
Either or can be used with any triangle...I personally find the law of sines is often more compact as in this case we can just say;
(sin115)/18=(sin40)/c (with no need for b or B as would be needed with the law of cosines...)
c=18(sin40)/(sin115)
c≈12.77