Answer:
S = v1 t1 = 7 t1 traveling downstream
S = v2 t2 = 5 t2 traveling upstream
7 t1 = 5 t2
7 (6 - t2) = 5 t2 since t1 + t2 = 6
42 - 7 t2 = 5 t2
t2 = 42 / 12 = 3.5 hrs so t1 = 2.5 hrs
S = 7 t1 = 7 * 2.5 = 17.5 mi
Also, S = 5 t2 = 5 * 3.5 = 17.5 mi
Answer: D: Half turn about the origin
Answer:
262 miles
Step-by-step explanation:
251.55 - 20.99 = 230.56

Is this a right triangle or triangle is solving for?
Answer:
3
Step-by-step explanation:
There are a significant number of minus signs here. We can simplify it a bit by factoring out -x:
= -x(x +4)
When we substitute x = -3, we get ...
= -(-3)(-3 +4)
= 3(1)
= 3