I believe the answer is: Sheet metal
Self tapping screws are made by creating a gap in the connector within the thread of a crew, which creates a flute and cutting edge just like what we see on tap. This makes self tapping screws able to tap their own hole in a sheet metal while normal screws can't.
Actually.. there are more than 1000 languages in each of : Africa, Asia, Americas and the Pacific, and the most are in Asia, Just above a 1000 are in the Americas - that's probably the answer you're looking for, and the others that i mentioned have over 2000.
Answer:
Lenovo reduced the price of the model by 9% because it is what the calculations of price elasticity and cross price elasticity is telling the company to do.
A negative -12.64 price elasticity of demand means that the quantity demanded for the product falls more than the price rises. For this reason, the company found it necessary to reduce the price, in order to prevent a fall in demand.
A positive cross price elasticity of 9% means that the quantity demanded for this product will increase more than the reduction in price when compared to another product (likely a substitute, for example: a computer produced by another company). For this reason, Levono decided to lower the price, because the loss in revenue from the price reduction will be offset by the higher demand.
Navigation of the American Explorers - 15th to 17th Centuries
Seventeenth century travelers to Maine’s coast such as Samuel Champlain, George Waymouth, and John Smith carried state-of-the-art navigation tools for both dead reckoning and celestial navigation.
Navigation Tools for Dead Reckoning and Piloting
Invented in China in the 3rd century BC, the compass did not come to Europe until the 12th century AD. By the time of Columbus' voyage it was common. Instead of degrees, the compass card, on which directions were drawn or printed, showed the points of the compass, including north, south, east, and west. There are 32 points of the compass, the four main quadrants of the circle each divided into eight 11¼ ° points. Columbus noticed that, as one sailed across the Atlantic Ocean, the variation between magnetic north and true north changed. On future trips he used this to predict, roughly, his arrival in America.
