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
mina [271]
3 years ago
14

A leprechaun places a magic penny under a​ girl's pillow. The next night there are 2 magic pennies under her pillow. Each night

the number of magic pennies doubles. How much money will the girl have after 22 ​nights?
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

  • tn = 2097152 pennies
  • tn = 20971.52 dollars.

Step-by-step explanation:

A surprisingly large amount of money.

The question is "Does the amount of money just double or do the previous amounts add to the present amount?"

I think it just doubles. Not only that, but she can't spend any of it until night 22 is reached.

  • tn = a*2^(n - 1)
  • a = 1   She starts with 1 penny.
  • n = 22
  • tn = 1*2^(22 - 1)
  • tn = 1*2^21
  • tn = 2097152 pennies
  • tn = 20971.52 dollars.
You might be interested in
Elena packed 48 cubes into this box.Each cube has edges that are 1 centimeter.How many layers of cubes did Elena make
solniwko [45]
Elena packed 48 cubes.
Each cube has an edge of 1 centimeter.
The number of layers that Elena can make depends on how each layer is arranged and depends on how many cubes are there in a layer.
Assume that each layer has  only 1 cube, then there are 48 layers.
4 0
3 years ago
I need help quickly. I think it's B or D.
Ludmilka [50]

personally id say c cuz the one on the right makes it have no trend, and also because if it was a negative trend there should only have been one answer on it really.

5 0
3 years ago
Read 2 more answers
4. Sam's parents are teachers who commute 45 miles roundtrip to work 5 2 days a week. His parents spend $38 on gasoline each wee
Marat540 [252]
<h2>Answer:</h2><h2>The correct option is d. (i) and (ii)</h2>

Step-by-step explanation:

The total miles covered per day = 45

No of commuting days in a week = 5

Total miles in a week = 45 * 5 = 225

The total amount spent on gasoline = $ 38

Cost of gasoline per gallon = $ 2.48

The number of gallons consumed per week = \frac{38}{2.48} = 15.32 gallons of gasoline per week.

This confirms (ii) statement

The amount spend on gasoline per mile = \frac{38}{225} = $0.17

This confirms (i) statement

The number of miles per gallon of gasoline = \frac{225}{15.32} = 14.68 miles

The statement (iii) is false.

7 0
3 years ago
Which function is increasing at the highest rate?
Nimfa-mama [501]
The correct answer is A.
3 0
3 years ago
Read 2 more answers
The explicit rule for an arithmetic sequence is An=20/3 / 1/3 (n-1)
Troyanec [42]
We are to solve for the 89 term of the Arithmetic equation given below:
An = 20/3 + 1/3 (n-1)
Replacing n with 89, we have:
An = 20/3 + 1/3 (89-1)
An =20/3 + 1/3 (88)
An = 20/3 +88/3
An =108/3
An = 36

The 89th term is 36.
5 0
3 years ago
Read 2 more answers
Other questions:
  • When you divide a whole number by a decimal less than 1, the quotient is greater than the whole number. Why?
    15·1 answer
  • Simplify: 19x – y – 2z + x + 5y + 2z
    14·1 answer
  • Convert 12 quarts to gallons
    8·2 answers
  • What is the slope of the line represented by the equation y = 4/5 x -3? A-1 B-4/5 C4/5 D3
    11·2 answers
  • Dianna has 7 quarters, 3 dimes, and 8 nickels in her purse. She reaches into her purse and randomly grabs two coins. What is the
    11·1 answer
  • HELP PLSS NEED ANSWER ASAP
    15·1 answer
  • I'm awarding 20 points for an answer!
    14·1 answer
  • David drives 40 miles in one hour. How many miles does he drive 1.5 hours?
    9·1 answer
  • Factor each expression. (GCF)<br> 1. 2xy3 – 10x
    10·1 answer
  • Help would help please :) auestion in attacment
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!