The number of degrees of longitude that separate New York City and Reno, Nevada is 120 – 75 = 45 degrees of longitude. The time difference can be calculated by dividing it by 15 degrees because for every 15 degrees there is 1 hr difference. 45 / 15 = 3 hr difference
Despite his nature of giving, Musa's massive spending and generous donations created a massive ten year gold recession. In the cities of Cairo, Medina, and Mecca, the sudden influx of gold devalued the metal significantly. Prices of goods and wares became greatly inflated.
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Answer:
b. a theory
Explanation:
A theory is said to be a well structured explanation of a result in particular field of study. A theory tend to follow series of steps in an attempt to explain a result ;
Hypothesis : This is said to be a knowledgeable guess in the field of sciences.
Observation : The scientist engage in thorough study or observation of the experiment or facts he wants to establish.
Experiments : The scientist engage in series of experiments to back up his fact and observation.
A theory is propounded if it is testable . The theory must have passed through a series of scientific research to become an establish facts. It must pass numerous scientific investigation and often involving contribution from well meaning scientist in that domain. The theory must be simple , precise and express-able so it can be repeated by other scientist. This established fact should not contradict previous principles or theory but instead expand and agree with others.
