There are 2 miners. one mines 19,687 m of ore in 1 hour and the other one mines the same amount of ore in 51 minutes. find how much ore per hour the second miner gets.

True or false? a triangle can be circumscribed about a given circle

What is the perimeter of square abcd? units units 28 units 37 units

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