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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.
In a cube with side length 6, what is the volume of the tetrahedron formed by any vertex and the three vertices connected to that vertex by edges of the cube?
Consider a deck of four cards, labeled 1?, 1Ο, 2?, and 2Ο. Draw a card, put it back, shuffle the deck, and draw a second card. Compute the expected value of Z = X +Y, where X is the numerical value of the first card and Y is the numerical value of..
Write the null and alternative hypotheses
in the course of designing theater seats the sitting heights in mm of a sample of adult women is obtained and the
The 4 runners on a relay team all want to run the same distance in a race. The coach says that the first runner will go 1/4 of the distance. Then the second runner will go 1/3 of the remaining distance
Find the batting average of a player who gets 17 hits in 52 times at bat. (Hint: Divide to the ten-thousandths place and round your answer to the nearest thousandth.)
Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 pound mixture that is 8% protein?
Determine the volume of cement contained in the tank as a function of the depth of the cement.
a supply and a demand function are, respectively, p=100+4q and p=180-5q here q= the number of items and p= $ per item. find the equilibrium demand and the equilibrium price.
The researcher will select one participant from the group at random, and then she will select a second participant at random from the remaining participants. What is the probability that two males will be selected. Report your answer as an exact f..
A certain drug is made out of two compounds only: compound A and compound B. To make this drug, two parts of compound A are used for every three parts of compound B. If a chemist wants to make 315 milliliters of this drug, how many milliliters of ..
a thunderstorm produced 114 lightning strikes in 1 and 1/2 hours. what was the unit rate if lightning strikes?
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