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katovenus [111]
3 years ago
14

In the beginning of wireless technology, some devices used _____ technology to "beam" information from one source to another sou

rce without the use of wired connections. a. ​air-compression b. ​xray c. ​gamma spectrum d. ​infrared
Computers and Technology
1 answer:
sveticcg [70]3 years ago
4 0

Answer:

D. infrared.

Explanation:

Wireless technology for communication uses electromagnetic wave to transmit signals between location. It eliminates the need of cables for connecting network devices.

In previous wireless technology implementation, Infrared rays were used (in tv remotes), which needed to be in the line of sight to its destination. Although it was fast, it has many limitations for a long-haul transmission like its short transmission range, easily blocked by objects and its uni-directional properties.

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In 1964 in London, Ontario one could buy a chili-dog and a root beer for $1.25, today the same chili dog and root beer cost $5.0
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Answer:

3% inflation rise. No correct cpi option

Explanation:

Consumer Price Index(CPI) is calculated by the Bureau of Economic Analysis and Statistics of a country monthly and annually.

Consumer Price Index(CPI) is used for measuring the changes in the price level of consumer goods and services purchased by households.

Calculating the consumer price index; price in 1964= $1.25, today price= $5.0.

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Consumer Price index(CPI)= $(5-1.25)/1.25 = 3.75/1.25 = 3 Percent price inflation rise.

For the first cpi; 112-80/80= 0.4 percent( not equal to the 3 Percent inflation rise).

For the second cpi: 141.6-60/60= 1.36 Percent inflation rise(not equal to the 3 Percent inflation rise).

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For the third CPI: 108.5-90/90=0.21 percent inflation rise(not equal to 3 Percent inflation rise)

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automated

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