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3 years ago

On which of the following levels are databases not used?

1 answer:

8 0

Personal; For virtually any personal reason, there would be no need for a database. The amount of work you would have to put into it would be greater than the benefits. One person could not have a real use for such a large collection of information unless they were working on a massive project.

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It costs $34,000 to retrofit the gasoline pumps at a certain filling station so the pumps can dispense E85 fuel (85% ethanol a

victus00 [196]

Answer:

The investor will pay up the rereofitted pumps in a period of 22.52 months.

Explanation:

<em><u>First,</u></em> we solve for the amount of profit generate per month:

21,000 gallons a month x $0.09 per gallon = $1,890

Now, we calcualte the time at which an monthly income of 1890 discounted at 2% per month matches a present value of 34,000

$C \times \frac{1-(1+r)^{-time} }{rate} = PV\\$

C $1,890.00

time n

rate 0.02

PV $34,000.0000

$1890 \times \frac{1-(1+0.02)^{-n} }{0.02} = 34000\\$

$(1+0.02)^{-n}= 1-\frac{34000\times0.02}{1890}$

$(1+0.02)^{-n}= 0.64021164$

We use logarithmics properties to solve for n:

$-n= \frac{log0.64021164021164}{log(1+0.02)$

-22.52006579

n = 22.5200 = 22 and a half month.

7 0

3 years ago

Will today's second generation of immigrants move up the occupational ladder?

Ket [755]

No not if Donald Trump becomes president he is sending all imagrants back and he wants all white schools so

7 0

3 years ago

Peggy Grey's Cookies has net income of $400. The firm pays out 30 percent of the net income to its shareholders as dividends. Du

andreev551 [17]

Answer:

Cash flow = $35

Explanation:

Cash flow= Payout ratio*net income-price of stock= 0.30*400-85=35

3 0

3 years ago

When comparing the GDP of different countries, two issues immediately arise - currency and population differences. How does one

kykrilka [37]

Answer: Currency is converted to common currency, GDP is divide by population and compare GDP per Capita

Explanation:

GDP is measured in a countries currency. When Comparing a GDP of one country to the GDP of another country currency is converted into a common currency. Currency can be converted using exchange rate. the GDP of one country will then be expressed in the currency of another country using the exchange rate.

Some countries have a high number of population than others, for example China has more people than Mexico. therefore measure GDP and The standard of living between countries GDP will need to be divided by population which will give us GDP per capita which measures the standard of living by showing the GDP per person

7 0

3 years ago

When did Toronto pearsonAirport(Canada) start using technology or scanner

mote1985 [20]

Answer:

Canada's busiest airport will soon start to use artificial intelligence- powered technology to detect weapons.
The technology can detect both metallic and non-metallic weapons ranging from guns and knives to explosives, according to Liberty Defense Holdings Ltd., a Vancouver-based company which first marketed the technology. Known as Hex wave, the technology works by capturing radar images, then using artificial intelligence to analyze them for concealed weapons in bags or under clothing.
Liberty's CEO, Bill Riker explained, "radar essentially is emitting this form of energy, it's reflecting off a person and it's identifying any items on a person's body that don't belong on a body."
The technology will start getting deployed at Pearson in the Spring of 2020 in a bid to boost security, according to the Greater Toronto Airports Authority, which runs Pearson.

7 0

3 years ago