The mass of a black hole with the same radius as the sun is 4.7x10^35kg. how many times more massive is this black hole than the mass of the sun (2x10^30kg)

a.5

b.160

c.10500

d. 235000

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor. b. increased mechanization has increased the need for water, thereby increasing the need for labor. increased mechanization has increased the use of land, thereby increasing the need for labor. d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

What is the mostly tropical region in asia

What is the pattern of urbanisation around the word?