In 2014, the population of Hong Kong was estimated to be approximately 7,112,888 people. The city covers an area
of approximately 426.25 square miles. What was the population density of Hong Kong in 2014, in people per square mile, rounded to the nearest person?
Which term is defined as two intersecting lines that form four right angles in a plane?
A.) skew lines B.) straight lines C.) parallel lines D.) perpendicular lines
A parallelogram and an incomplete proof are shown.
Place reasons in the table to complete the proof:
Events A and B are independent.
P(A and B) = 0.25 What are possible probabilities for events A and B ?
A total of 50 students play either soccer or lacrosse.
The twoway table shows the number of births, in thousands, in the United States for the years 2010 and 2011.
A baby born in 2011 is randomly selected.
What is the probability that the baby was born in February?
Jeremy wants to know the density of a rock in grams per cubic centimeter. The rock has a mass of 1.08 kilograms and a
volume of 400 cubic centimeters. What is the density of the rock in grams per cubic centimeter? (g/cm³) 
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