Solve the problem.How long will it take for the population of a certain country to double if its annual growth rate is ? Round to the nearest year.

A. 24 yr
B. 1 yr
C. 69 yr
D. 10 yr


Answer: A

Mathematics

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Solve the problem.Evaluate by writing the integrand as an integral.

A.
B. ln 
C. ln 
D.

Mathematics

Solve the equation for solutions in the interval [0°, 360°). Round to the nearest degree.sin 2? = cos ?

A. {105°, 165°, 285°, 345°} B. {15°, 165°, 195°, 345°} C. {0°, 120°, 180°, 240°} D. {30°, 90°, 150°, 270°}

Mathematics

Provide an appropriate response.Write a valid conclusion based on the following statements: The store is open today if and only if it is not Saturday or Sunday. Today is Saturday.

What will be an ideal response?

Mathematics

Solve the problem.A railroad tunnel is shaped like a semiellipse. The height of the tunnel at the center is 15 ft and the vertical clearance must be  at a point  from the center. Find an equation for the ellipse. 

A.  +  = 1
B.  +  = 1
C.  +  = 1
D.  +  = 1

Mathematics