Fie multimea:A={a, b,c}; B={c, d,e}; C={a, c,e}. Caror multimi le apartine: a) elementul a b) elementul b

a. A si C

b. A

Step-by-step explanation:

Aici, vrem să cunoaștem seturile la care aparțin elementele;

a) Elementul

a putem vedea elementul a în mulțimea A și C

b) Elementul b

putem vedea elementul b numai în mulțimea A

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day