Split the triangle into a 30-60-90 triangle. Since you have LM from that triangle, you can figure out the other sides. Then, using the leg from that triangle, the one next to it is a 45-45-90 triangle, meaning it's isosceles.
KM = 30 + 10√3
KL = 10√6
(sorry i'm not too sure if my "reasons" for statement/reason is correct)
Answer:
25 divided by 5 = 5, so the unit rate is 5 circuit boards every minute.
Answer:
900
Step-by-step explanation
That would be 3 * 300 = 900
By scientific notation I am assuming you mean standard form, as that is used primarily in scientific calculations. The answer in standard form would be

I hope this helps!
Neagtive means go backwards or oposite
it takes away that many units