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In 1900 ,a certain country's population was 70,512,134and its area was 2,891,242 square miles. In 1980 ,the country's population 285,292,624 and its area was 3,534,621 square miles.
a. Find the population density of the country, to the nearest tenth, in 1900 and in 1980.
b. Find the percent increase in population density, to the nearest tenth of a percent, from 1900 to 1980.
a car travels at a constant speed from q to r, a distance of 300 km apart. if the driver increases the speed by 5 km.h, the journey will take 2 hours less. find the original speed of the car.
How many distinct terms are there in the multinomial expansions of
as it leans against a building an 8 meter ladder makes an angle of 62 deg with the ground. how far is the bottom of
The surrounding lawn is to be 10m wide on the north and south sides of the garden and 3m wide on the east and west sides. Find the dimensions of the rose garden if the total area of the rose garden and the lawn together is to be a minimum.
Analyzing the communications/PR/media strategy of Donal Trump as a national level political candidate and evaluate his campaign. Analyzing his strength and weakness and how to minimize the weakness while maximize the strength. If your are his media c..
A swimming pool is 16 feet wide and has transverse cross-sections which look like: If the pool is being filled at a rate of 1.1 cubic feet per minute, how fast is the water level rising when the depth of water is 2 feet?
Find the equation of the tangent line in slope intercept form of the curve given by: Sand is being poured on a conical pile at the rate of 12 cubic feet per minute, the height of the pile being three times its diameter throughout. At what rate is t..
What sample size would be required to obtain a 99% 2-sided confidence interval for the true proportion of Green Party support with a margin of error of 1%?
Sarah spent 4/9 of her paycheck on food,1/3 of her money on rent,180$ on shopping,270 on clothing and saved 50$ as a remaining. What fraction did she save of her paycheck
Find the area of the region bounded by the graphs of the given equations.
1. The number of inmates N (measured in thousands) in federal and state prisons can be approximated by the equation Upper N equals negative 2.08 x squared plus 77.88 x plus 745,where x is the number of years since 1990. In what year was the number..
Explanation to "Statistics - Probability" question Suppose you randomly place 'r' indistinguishable balls into 'n' boxes. (a) how many different ways do you have
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