1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vladimir1956 [14]
3 years ago
12

The life expectancy of a circulating coin is 25 years. The life expectancy of a circulating dollar bill is only 1/20 as long. Fi

nd the life expectancy of circulating paper money
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0
This problem can be solved easily by multiplying the time of the life expectancy of the coin with the fraction 1/20. The solution is as follows:

<span>Life expectancy of circulating paper money = 25 years * 1/20
</span><span>Life expectancy of circulating paper money = 1.25 years or 1 and 1/4 years</span>
You might be interested in
Mohamed decided to track the number of leaves on the tree in his backyard each year The first year there were 500 leaves Each ye
svetlana [45]

Answer:

The required recursive formula is

f(n)= 500\times(1.4)^{n-1}\\

Step-by-step explanation:

Mohamed decided to track the number of leaves on the tree in his backyard each year.

The first year there were 500 leaves

Year \: 1 = 500

Each year thereafter the number of leaves was 40% more than the year before so that means

Year \: 2 = 500(1+0.40) = 500\times 1.4\\

For the third year the number of leaves increase 40% than the year before so that means

Year \: 3 = 500\times 1.4(1+0.40) = 500 \times 1.4^{2}\\

Similarly for fourth year,

Year \: 4 = 500\times 1.4^{2}(1+0.40) = 500\times 1.4^{3}\\

So we can clearly see the pattern here

Let f(n) be the number of leaves on the tree in Mohameds back yard in the nth year since he started tracking it then general recursive formula is

f(n)= 500\times(1.4)^{n-1}\\

This is the required recursive formula to find the number of leaves for the nth year.

Bonus:

Lets find out the number of leaves in the 10th year,

f(10)= 500\times(1.4)^{10-1}\\\\f(10)= 500\times(1.4)^{9}\\\\f(10)= 500\times20.66\\\\f(10)= 10330

So there will be 10330 leaves in the 10th year.

3 0
2 years ago
Read 2 more answers
Name the subsets of which the number 13 belongs to. If you can even just tell me how to find the subset that's great! :)
Mamont248 [21]
It also belongs to set of natural numbers.
6 0
3 years ago
Rhett made $250 washing cars with his mobile car wash company. He charges $70 per car and earned $50 in tips. Write an equation
Vadim26 [7]

Answer: 250=70x+50

Step-by-step explanation:

250 being the total would go at the equal sign

250=

And since it says 70 Per car that means it would be 70x so

250=70x

50 dollars in tips is a total so

250=70x+50 is your equation

3 0
3 years ago
Read 2 more answers
Rewrite 5 3/7 as an improper fraction.
bija089 [108]
The answer should be 38/7
7 0
3 years ago
Read 2 more answers
One more than the product of 17 and Matt's savings
velikii [3]

Answer:

17m=2

Step-by-step explanation:

hey plz pick mine as the brainliest?

8 0
3 years ago
Other questions:
  • Lea received a tip of $8 on a restaurant tab of $20. What percent tip did<br> she receive?
    14·1 answer
  • More and more businesses and homeowners are installing solar panels on their roofs to draw energy from the sun's rays. According
    11·1 answer
  • Michelle received notice from her bank that her account balance was - $12. She then went to the bank and deposited her paycheck.
    7·2 answers
  • 3214325435435345353534
    13·1 answer
  • A sorveteria “Que calor” vendeu 70 picolés e faturou R$ 100,00.Que sistema de equações do 1º grau melhor traduz essa situação?
    8·1 answer
  • Find the circumference of each circle using the given radius or diameter. Round to the nearest hundredth when necessary.
    9·1 answer
  • Would this be a cone??
    15·2 answers
  • Is 13 the hypotenuse
    8·1 answer
  • A saleswomen is paid $10 per hour and $6 for each sale she makes. She wants to earn more than $150 in a 8-hour work period.
    7·1 answer
  • How do you simplify h + i + i
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!