Atriangle has vertices p(−5, 4), q(3, 4), and r(−5, −2). s is the midpoint of segment pq and t is the midpoint of segment pr. what is the length of segment st?

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.