Solve the problem.In one country, it is estimated that in the year 2050,  9% of the population will be over 70. If the population of this country in 2050 is 446 million, how many people will be over 70? 

A. 35.68 million
B. 401.40  million
C. 40.14  million
D. 44.60 million


Answer: C

Mathematics

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Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: portion of the sphere x2 + y2 + z2 = 25 that lies in the first octantDensity: constant

A.
B.
C.
D.

Mathematics

Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Foci at (0, -25), (0, 25); asymptotes: y = x, y = - x

A.  -  = 1
B.  -  = 1
C.  -  = 1
D.  -  = 1

Mathematics

Solve the problem.Any data collection process in which the data are collected from each and every member of the population is called

A. a parameter. B. a public opinion poll. C. a census. D. a survey. E. none of these

Mathematics

Decide whether the given functions are inverses.f = {(3, 16), (4, 24), (5, 32), (6, 40), (7, 48)}g = {16, 3), (24, 4), (32, 5), (40, 6), (48, 7)}

A. Yes B. No

Mathematics