The population of the earth is approximately 6 billion people and is growing at an annual growth rate of 1.9%. Assuming a Malthusian growth model, find the world population in 25 years. Round your answer to the nearest tenth. 

A. 10.9 billion
B. 9.8 billion
C. 13.6 billion
D. 9.6 billion


Answer: D

Mathematics

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Find the volume of the described solid.The base of the solid is the disk x2 + y2 ? 4. The cross sections by planes perpendicular to the  between  and  are isosceles right triangles with one leg in the disk.

A.
B.
C.
D.

Mathematics

Find the greatest common factor of the list of items.40x3, 20x6

A. 10x3 B. 40x3 C. 30x3 D. 20x3

Mathematics

Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry and draw the graph.x = -(y + 1)2 + 6

A.
 
opens left; vertex (1-6);
axis of symmetry y = -6
B.
 
opens left; vertex (6-1);
axis of symmetry y = -1
C.

opens left; vertex (-16);
axis of symmetry y = 6
D.
 
opens left; vertex (61);
axis of symmetry y = 1

Mathematics

For each given statement Sn, write the statements S1, S2, and S3 and verify that they are true.Sn:   = 

What will be an ideal response?

Mathematics