Exercises
1. POPULATION The population of Bulgaria has been decreasing at an annual
rate...
Mathematics, 25.03.2020 18:48 photagraphykid
Exercises
1. POPULATION The population of Bulgaria has been decreasing at an annual
rate of 0.89%. If the population of Bulgaria was about 7,450,349 in the year
2005, predict its population in the year 2015.
2. DEPRECIATION Mr. Gossell is a machinist. He bought some new machinery for about
$125,000. He wants to calculate the value of the machinery over the next 10 years for
tax purposes. If the machinery depreciates at the rate of 15% per year, what is the value
of the machinery to the nearest $100) at the end of 10 years?
3. ARCHAEOLOGY The half-life of a radioactive element is defined as the time that it
takes for one-half a quantity of the element to decay. Radioactive carbon-14 is found in
all living organisms and has a half-life of 5730 years. Consider a living organism with an
original concentration of carbon-14 of 100 grams.
a. If the organism lived 5730 years ago, what is the concentration of carbon-14
today?
b. If the organism lived 11,460 years ago, determine the concentration of carbon-14
today
4. DEPRECIATION A new car costs $32,000. It is expected to depreciate 12% each year
for years and then depreciate 8% each year thereafter. Find the value of the car in
6 years
Glencoe Algebra 1
Answers: 3
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Thelime contains the point(-3,0) and parallel x-3y=3( show all work)
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Mathematics, 21.06.2019 20:00
Ana drinks chocolate milk out of glasses that each holdof a liter. she has of a liter of chocolate milk in her refrigerator. 10 how many glasses of chocolate milk can she pour?
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Mathematics, 21.06.2019 23:20
Identify the function that contains the data in the following table: x β β -2 β β β β 0 β β β β 2 β β β β 3 β β β β 5 β β f(x) β β 5 β β β β 3 β β β β 1 β β β β 2 β β β β 4 β β possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1
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Mathematics, 22.06.2019 02:30
Which problem would you use the following proportion to solve for? 24/x = 40/100 a. what is 40% of 24? b. what percent is 24 of 40? c. twenty-four is 40% of what number? d. forty percent of 24 is what number?
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Mathematics, 07.10.2020 15:01
English, 07.10.2020 15:01
English, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01
English, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01
Mathematics, 07.10.2020 15:01