Rewrite the following using mathematical symbols. a. M is equal to the set whose elements are a, b, and r.
b. The set containing 9 and 11 is equal to the set containing 11 and 9.
c. The set containing 6 and 9 only is not a proper subset of
{5,6,12}

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000