Write the number in scientific notation

8,670,000,000

a.) 8.67 x 10
b.) 86.7 x 100
c.) 8.67 x 10
d.) 0.867 x 10

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

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

Opposite angles in a parrellelogram are