20 points which of the following was not a factor in the growth of huge steel empires after the civil war?
a.
the railroads’ need for strong, durable rails
b.
the cost-cutting benefits of the bessemer process
c.
the growing popularity of skyscrapers in big cities
d.
the development of a less-polluting manufacturing process

answer: is your answer

step-by-step explanation:

answer:

d.   the development of a less-polluting manufacturing process

step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.