Answer:
The tip would be $6.36
Explanation:
If the bill was $42.40, and you wanted to leave 15% tip

0.15 is the same as 15% and you multiple it by the amount to get your tip
Answer:
The disintegration of the Roman empire freed Europe from rule by a single power. Imperial monopolies provided peace and stability, but by seeking to preserve the status quo also tended to stifle experimentation and dissent. When the end of empire removed centralized control, rival political, military, economic and religious constituencies began to fight, bargain and compromise and – in the process – rebuilt society along different lines.Explanation:
The biggest difference is with the data they deal with. Sociology deals with a problem or a premise by studying human influence or studying the interaction of human to its environment as always the principal subject and with no scientific method involved. Whilst other natural sciences like scientist of biology uses scientific method and data from the environment to come up with his own premise on the matter.
Your correct answer is: A prime meridian is a meridian in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its antimeridian form a great circle. This great circle divides the sphere, e.g., Earth, into two hemispheres. The earth's zero of longitude, which by convention passes through Greenwich, England.