It was the refinement of the Bessemer process, first used in the United States in the 1860s, that allowed for the major advance in skyscraper construction. As steel is stronger and lighter in weight than iron, the use of a steel frame made possible the construction of truly tall buildings.
x + 6 + 2x = 15
x+2x+6= 15 ( combine like terms)
3x+6= 15
move +6 to the other side
sign changes from +6 to -6
3x+6-6= 15-6
3x= 15-6
3x= 9
divide both sides by 3 to get x by itself
3x/3= 9/3
Cross out 3 and 3 , divide by 3 and then becomes 1*1*x= x
x= 9/3
Answer: x= 3
Answer: "relative location" .
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It influence Chinese culture in the first century it brought it with a vast personal properties from the earliest times and did in fact use of making money, it changed by the perspective of the Chinese.
<span>The correct answers are B. A moat filled with water from the Euphrates River surrounded the city, and
C. Walls around the city provided protection from enemies. This was copied later by many cities beacuse it was successful. Cities would dig deep trenches and holes around the city and fill them with water and you wouldn't be able to enter without crossing the bridge that may or may not be lowered for you. </span>
