A 50.0 kg student uses an improvised 75 kg raft to cross a heavily flooded street. He noticed that as he jumps to the sidewalk opposite the street with a speed of 1.5 m/s relative to the flood, the raft moves away. With what speed will the raft move relative to the flood? Assume that the raft is stationary before the student jumps to the sidewalk. Neglect fluid friction.​

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.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: