12/100 of a day, which reduces to 3/25 of a day.
B. (k+10f)(k-5f) you can tell in 2 ways. 1. if the second sign is neg then the signs in the factors are going to be one neg and one positive so that knocks out C and D. Then you look at the second term and since the 5 is positive then the 10 has to be positive so you end up with a positive 5kf.
The second way is to FOIL them out. When you check B you get
combine your like terms and you have your original expression of
Hope that helps
When a system of equations is represented in the Cartesian plane, the solution is the intersection of both plots. The closes one seems to be: (-2.5,-1.8)
Answer:
17.3 because it was 17.25 so you round