45w is 12:00 noon what will be the local mean time at 90?

9 pm

Explanation:

If the local mean time at 45° W is 12:00 noon, what will be the local mean time at 90°E?

Solution:

The lines of longitude run from north to south, measuring distance from east to west of the prime meridian. The line of longitude are used to measure time.

Each 1° = 4 minutes

Change in degrees (we add since it is west and east) = 45° + 90° = 135°

Change in time = 135 * 4 minute = 540 minutes

change in time = 540 minutes = 9 hours

local mean time at 90°E = 12 noon + 9 hours = 9 pm

forty niners migrated west due to gold discovery in california and it the west was a new place for hope this : )

explanation: