2x^2 - 2x - 12 = 0
a) The GCF is 2x
2(x^2 - x - 6) = 0
What multiplies to negative six and adds to negative 1?
Negative 3 and positive 2.
2(x-3)(x+2) = 0
Solutions:
3, -2
It might be 85 I’m not totally sure
Distance = (rate)(time)
In this problem, note that both girls traveled the same distance.
Karens distance = r * 1.5 hrs we dont know her rate
Nancy distance = 50 * 1 hr we know she started 30 min later
but arrived at the same time
since the distances are equal
r*1.5 = 50 * 1 all you have to do is solve for r
1.5r = 50
r = 50/1.5
r = 33 1/3 miles per hour
20*6=120seconds +3600second in an hour so 3600*4=14400
1210+14400=14520
14520 is the answer I hope this helps!
