If a part is 3 cm long how long is it in inches

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2