Given: Cosine (x minus y)

Step 1: Cofunction Identity

Step 5: Sine Difference Identity

Step 6: Cofunction Identity

Step 7: Cosine Function Is Even, Sine Function Is Odd

Step 1: Cofunction Identity

Step 5: Sine Difference Identity

Step 6: Cofunction Identity

Step 7: Cosine Function Is Even, Sine Function Is Odd

Step-by-step explanation:

correct of edg

Romania has the greatest population density (95.24) and U.S. has the least (29.12). It means that there are more inhabitants per square kilometer in Romania than in Ghana and US. and that there are less inhabitants per square kilometer in U.S. than in Ghana and Romania.

Step-by-step explanation:

         Country Population (1997 estimate) Area (square km)

U.S.                272,648,000                                9,364,520

Romania         22,609,000                                   237,391

Ghana             18,339,000                                    237,533

Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit.

Let's recall the formula of the population density:

Population density = Country population/Area

U.S. 272,648,000/ 9,364,520 = 29.12 (rounding to the next hundredth)

Romania 22,609,000/ 237,391 = 95.24 (rounding to the next hundredth)

Ghana 18,339,000/ 237,533 = 77.21 (rounding to the next hundredth)

Romania has the greatest population density (95.24) and U.S. has the least (29.12). It means that there are more inhabitants per square kilometer in Romania than in Ghana and US. and that there are less inhabitants per square kilometer in U.S. than in Ghana and Romania.