Question

1. identify the city that lies closest to each pair of coordinates.

a. 30°n, 90°w ______
b. 30°n, 30°e ______
c. 60°n, 30°e ______

Explanation:

Part a:

To identify the city near \(30^\circ\text{N}, 90^\circ\text{W}\), we recall that latitude \(30^\circ\text{N}\) and longitude \(90^\circ\text{W}\) is in the Gulf of Mexico region, and New Orleans (or more precisely, New Orleans is close, but also New Orleans, LA, or another city near this coordinate is New Orleans, but actually, the city closest to \(30^\circ\text{N}, 90^\circ\text{W}\) is New Orleans? Wait, no, \(30^\circ\text{N}, 90^\circ\text{W}\) is near New Orleans, Louisiana, USA. Wait, actually, the coordinates \(30^\circ\text{N}, 90^\circ\text{W}\) are near New Orleans, but also, the city of New Orleans is close. Alternatively, the city closest to \(30^\circ\text{N}, 90^\circ\text{W}\) is New Orleans? Wait, no, let's check: \(30^\circ\text{N}\) is the latitude, \(90^\circ\text{W}\) is longitude. The city near this is New Orleans, LA, or maybe New Orleans. Wait, actually, the coordinates \(30^\circ\text{N}, 90^\circ\text{W}\) are near New Orleans, but also, the city of New Orleans is close. Alternatively, the city closest to \(30^\circ\text{N}, 90^\circ\text{W}\) is New Orleans? Wait, no, let's think again. The coordinates \(30^\circ\text{N}, 90^\circ\text{W}\) are in the vicinity of New Orleans, Louisiana, USA. So the city is New Orleans.

Part b:

For \(30^\circ\text{N}, 30^\circ\text{E}\), we look at the region. Latitude \(30^\circ\text{N}\) and longitude \(30^\circ\text{E}\) is in Egypt, near the city of Cairo? Wait, no, Cairo is at about \(30^\circ\text{N}, 31^\circ\text{E}\), so very close. So the city closest to \(30^\circ\text{N}, 30^\circ\text{E}\) is Cairo.

Part c:

For \(60^\circ\text{N}, 30^\circ\text{E}\), we check the region. Latitude \(60^\circ\text{N}\) and longitude \(30^\circ\text{E}\) is in Russia, near the city of Saint Petersburg? Wait, no, Saint Petersburg is at about \(59^\circ\text{N}, 30^\circ\text{E}\), so very close. So the city closest to \(60^\circ\text{N}, 30^\circ\text{E}\) is Saint Petersburg.

Answer:

a. New Orleans (or more precisely, New Orleans, LA, USA)
b. Cairo (Egypt)
c. Saint Petersburg (Russia)