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Concept explainers
U.S. Birth and Death Rates. In 2015, the U.S. population was about 321 million. The overall birth rate was 12.5 births per 1000 people, and the overall death rate was 8.4 deaths per 1000 people.
a. Approximately how many births were there in the United States in 2015?
b. About how many deaths were there in the United States in that year?
c. Based on births and deaths alone (i.e., not counting immigration), about how much did the U.S. population increase during 2015?
d. Suppose that during 2015 the U.S. population actually increased by 3.0 million. Based on this fact and your results from part (c), estimate how many people immigrated to the United States. What proportion of the overall population growth was due to immigration?
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Chapter 7 Solutions
Using & Understanding Mathematics: A Quantitative Reasoning Approach (7th Edition)
- Please help with a detailed explaination how to get the answerarrow_forwardMATLAB. Awnser written questions (*) in the comments. Null, Rank, and most functions outside of rref() and disp() are not allowed!arrow_forwardMATLAB. Awnser written questions (*) in the comments. Null, Rank, and most functions outside of rref() and disp() are not allowed! Solutions must be given manually! Elementary form means to reduce to RREF manually, without rref(). Please see other attached image for explanationarrow_forward
- In ΔEFG, e = 520 inches, ∠E=26° and ∠F=107°. Find the area of ΔEFG, to the nearest 10th of an square inch.arrow_forwardIn ΔXYZ, ∠Y=90° and ∠X=25°. ∠ZWY=73° and XW=7.2. Find the length of WY to the nearest 100th. Figure not necessarily drawn to scale. XYWZ25°73°7.2?arrow_forwardIn ΔABC, a = 380 inches, ∠A=72° and ∠B=9°. Find the area of ΔABC, to the nearest 10th of an square inch.arrow_forward
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