The answer is 0 because any number elevated to 0 is 0
10 kilometers per hour
in 2.5 hours distance = 10 * 2.5 = 25 kilometers
I hope this helps you
x.x-2.3x+9-21=0
(x-3)^2-21=0
(x-3)^2=21
If slope of first line is 3 and is perpendicular to second line
then second line has a slope of -1/3
