In the bar graphs below, a projection of population by age groups and gender for two different countries is given as a percent of the country's population at the time. Provide an appropriate response.Population Pyramids for Countries A and B: 2006 and 2050
Which country has a much higher future projection for the 80+ age group? Explain this trend.
A. Country A possibly due to increased life expectancy.
B. Country A possibly due to famine.
C. Country B possibly due to increased life expectancy.
D. Country B possibly due to famine.
Answer: A
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Solve the problem.On October 1, The Bakery opened a savings account with a deposit of $13,400. A withdrawal of $7500 was made 15 days later and another withdrawal of $400 was made 8 days before January 1. Find the balance on January 1. Assume 3
% interest compounded daily.
A. $5562.23 B. $5562.07 C. $5562.99 D. $5562.27
Graph the function.y = sec 
A. 
B. 
C. 
D. 
The energy economy of an area is composed of four industries: gas, coal, hydroelectric, and nuclear. The three main consumers of energy are area residential consumers, a manufacturing plant, and a university. Assume that each consumer may use some of the energy produced by each industry, and also that each industry uses some of the energy produced by each of the other industries. The energy needs of each consumer and industry is represented by a demand vector whose entries, in order, give the amount of gas, coal, hydroelectric, and nuclear energy needed by each consumer or industry, in some convenient units. The demand vectors for the consumers are: src="https://sciemce.com/media/4/ppg__tttt0616191201__f1q138g2.jpg" alt="" style="vertical-align: -8.0px;" /> 
and the demand vectors for the industries are: 
The price of gas is 
per unit, the price of coal is 
per unit, the price of hydroelectric power is 
per unit, and the price of nuclear energy is 
per unit. These prices can be represented by the (column) price vector: P = 
Find the income earned by the coal industry and its cost for the other forms of energy it uses. Then calculate its profit.
What will be an ideal response?
Find the real solutions of the equation.x4 - 26x2 + 25 = 0
A. {-26, 26} B. {-25, 25} C. {-5, 5} D. {-1, 1, -5, 5}