Answif
a Jim crow law is any law that discriminates against a race
Explanation:
say 2 people of 2 different colors or gender or race do the same job one gets paid 12 and hour one gets paid 9 an hour that is discrimination because you are paying 2 different pays for the same job
Answer:
the people learned to control flooding
Explanation:
Answer:
i'm still trying to figure out the answer to !
Explanation:
Answer:
The time it will take to roof the house if the homeowner helps the roofer is 2.25 days.
Explanation:
The time it takes the homeowner to roof his house is, <em>X</em> = 9 days.
The time it takes the professional roofer to roof the house is, <em>Y</em> = 3 days.
Then if the the homeowner helps the roofer, the time it will take to roof the house is, <em>X</em> + <em>Y</em>.
The work done by the homeowner in 1 day is,
.
The work done by the professional roofer in 1 day is, 
The work done in 1 day if both the homeowner and the professional roofer work together is,
⇒ 
Then the number of days it takes to roof the house if both the homeowner and the professional roofer work together, i.e. <em>X</em> + <em>Y</em> is,
⇒ 
Thus, the time it will take to roof the house if the homeowner helps the roofer is 2.25 days.