What does contrast mean in mathematics?

What is 3 equivalent fractions for two thirds? What is the relationship between the slope of the line for each liquid and liquids density? Which is more-6 meters or 300 centimeters? What is the 2Nd largest two digit prime number? How much does an brain doctor make an hour? What is 0.28 as a fraction in its simplest form? How many minutes are in 2 and a half hours? What fraction is bigger 3.49 or 3.14? What is the slope of a line that is perpendicular to a line with slope of 3 over 5? How do you write out 1.52 milion? What 2 numbers added equal 14? What is the shape of lapis lazuli? Why guidance is positive and preventive rather than curative? What is an augmented sixth chord? What is 67000 meters squared in feet squared? What percent of 61 is 72? How many nines are there in 54? Is a rectangle and a trapezoid congruent? What is the slope of y equals 6x-1? What is the value of squared?