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What happens during the electrolysis of sodium chloride?
a)the mass of the anode decreases by time
b) sodium ions are oxidized at the anode
c) chloride ions are reduced at the cathode
d)the mass of the cathode increases by time
It has been reported that 40% of the adult population participate in computer hobbies during their leisure time. A random sample of 180 adults found that 65 engaged in computer hobbies. at a= 0.01, is there sufficient evidence to conclude that the proportion differs from 40%?
It has been reported that 40% of the adult population participate in computer hobbies during their leisure time. A random sample of 180 adults found that 65 engaged in computer hobbies. at a= 0.01, is there sufficient evidence to conclude that the proportion differs from 40%?
Write a program that requests the user for a year (you can assume the year will always be at
least 2000), the population of Brazil in that year (in terms of millions of people) and the annual
population growth rate (always as a real number in the range 0 – 1), and then uses the two
methods written above to determine and display the year in which Brazil’s population first
exceeded/exceeds 180 million people. The program must also display Brazil’s total population
in this year.
a) Write a method PopulationTotal that accepts 2 positive values, namely the current
population (in millions, e.g. a value of 1.5 means 1.5 million people) and the growth rate (e.g.
0.14 means 14%). The method determines and returns the total population based on the current
population and growth rate. For example, if the current population for a country is 1.165 million
people, and the annual population growth rate is 10%, then the total population is 1.2815 million
people after 1 year.
b) Write a method Over180Million that accepts a positive value representing the population (in
millions). The method determines whether the population is over 180 million people, and returns
a value of true if this is so, otherwise returns a value of false.
In the corner of a cellar is a pyramidal hoop of coal. The base of the hoop is an isosceles right triangle whose hypotenuse is 30ft. and its height is 8ft. What is the volume of the pyramidal hoop of coal in cu.ft.?
write a balance chemical equation of the reaction
1. There is a smallest positive integer.
2. There is no smallest positive real number.
3. There exists an integer that is larger than the product of any two
integers.
4. Every pair of integers has a common divisor.
1. There is a smallest positive integer.
X=842, n=1200, 95% confidence
#339914 on Dec 2023