A poll was taken to total the candy collected by a few students who went trick or treating on Halloween. Determine the ratio that compares the
number of candy bars to the total pieces of candy.

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

- (2, -7)

- lines r and s and lines t and u must be parallel

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: