jacks cow is tied to a beanstalk with a piece of rope that is 15ft long. what is the exact area of the circle in which a cow can graze?

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

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?