Postcards come in packages of 16. If 52 tourists each buy one package of postcards. how many postcards do they buy in all?

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

What is the radical expression that is equivalent to the expression 27 1 over 5?

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent