A radioactive substance decays according to A = Age-0.0005t, where A, is the initial amount and t is the time in years. If A, = 380 grams, find the time for the radioactive substance to decay to 254 grams. Round your answer to two decimal places, if necessary.

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.

answer:

125 yards

explanation:

75+50=125. that is my answer