One day, a person went to a horse racing area. instead of counting the number of humans an horses, he conuted 74 heads and 196 legs. how many humans and horses were there?

You have two unknowns - the number of people (P) and the number of horses (H). You can set up two equations to solve for these two unknowns. Every person and every horse has 1 head, so:



Also, every person has 2 legs but every horse has 4 legs, so:



We can now solve by rearranging the first equation (H = 74 - P), and subbing that value into the second equation:

(m+11n)^2=(m+11n)(m+11n)=m^2+11mn+11mn+121n^2=m^2+22mn×121n^2 for example; use foil: (a+b)(a+b)first. a^2outside. abinside. ablast. b^2

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