4. if a 325 mg sample of radioactive material decays to 195 mg in 72
hours. find the time it takes the material to break down for its half-life. (use the
basic model for half-life)

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.

0.50 , 0.75

step-by-step explanation:

2 x 503

step-by-step explanation:

its 1006