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
julsineya [31]
2 years ago
11

According to the rule of 72, t=72/r which statement is true?

Mathematics
2 answers:
Marta_Voda [28]2 years ago
6 0

Answer:

C. An investment of $4,500 will double in 8 years at a compound interest rate of 9%.

Step-by-step explanation:

Since, according to rule of 72,

An investment is doubled in a fixed annual rate of interest when the product of time ( in years ) and annual rate ( in percentage ) is 72.

In option A :

Annual rate of interest = 5 % and time = 12 years,

But, 5 × 12 ≠ 72,

Thus, option A is incorrect.

In option B :

Annual rate of interest = 7 % and time = 10 years,

But, 7 × 10 ≠ 72,

Thus, option B is incorrect.

In option C :

Annual rate of interest = 8 % and time = 9 years,

But, 8 × 9 = 72,

Thus, option C is correct.

In option D :

Annual rate of interest = 12 % and time = 4 years,

But, 12 × 4 ≠ 72,

Thus, option D is incorrect.

nika2105 [10]2 years ago
5 0
72/rate=time
72/9=8 years
So the answer is c
You might be interested in
Giving 10 points to anyone who answers these
sineoko [7]
I'm not sure about the first question.
Did you post the question correctly?

7 0
3 years ago
How do i show my work for 18 divided by 16.4?<br><br> plz help
frosja888 [35]
It will just keep going on as a decimal so you do not need to keep going, three spaces after the decimal should be an acceptable answer.

6 0
3 years ago
Read 2 more answers
Andy, who loves to cook, makes apple cobbler for his family. The recipe (serves 6) calls for 434 pounds of apples, 514 cups of f
Tamiku [17]

This question was not written properly

Complete question;

Andy, who loves to cook, makes apple cobbler for his family. The recipe (serves 6) calls for 4 3/4 pounds of apples, 5 1/4 cups of flour, 1/6 cup of margarine, 2 7/8 cups of sugar, and 2 teaspoons of cinnamon. Since guests are coming, Andy wants to make a cobbler that will serve 15 (or increase the recipe 2 1/2 times). How much of each ingredient should Andy use?

Answer:

To serve 15, number of ingredients Andy should use =

Apples = 11 7/8 pounds

Flour = 13 1/8 cups

Margarine = 5/12 cups

Sugar = 7 3/16 cups

Cinnamon = 5 teaspoons.

Step-by-step explanation:

The recipe (serves 6) calls for 4 3/4 pounds of apples, 5 1/4 cups of flour, 1/6 cup of margarine, 2 7/8 cups of sugar, and 2 teaspoons of cinnamon. Since guests are coming, Andy wants to make a cobbler that will serve 15 (or increase the recipe 2 1/2 times). How much of each ingredient should Andy use?

For Apples

Serving for 6 = 4 3/4 pounds of apples

Serving for 15 =

= 15 × 4 3/4 pounds/6

= 11 7/8 pounds of apples

For flour

6 servings = 5 1/4 cups of flour,

15 servings =

15 × 5 1/4 cups/6

= 13 1/8 cups of flour

For Margarine

6 servings = 1/6 cups of margarine

15 servings =

= 15 × 1/6 cups/6

= 5/12 cups of margarine

For Sugar

6 servings = 2 7/8 cups of sugar

15 servings =

15 × 2 7/8 cups/6

= 7 3/16 cups of sugar

For Cinnamon

6 servings = 2 teaspoons of cinnamon

15 servings =

15 × 2/6

= 5 teaspoons

Therefore, to serve 15, number of ingredients Andy should use =

Apples = 11 7/8 pounds

Flour = 13 1/8 cups

Margarine = 5/12 cups

Sugar = 7 3/16 cups

Cinnamon = 5 teaspoons.

5 0
3 years ago
Find the slope of the point, and reduce the lowest terms (7,3)(9,3)
Umnica [9.8K]
A point doesn't have a slope. A line has. You need to find the slope of the line that these 2 points are on. The slope is


(the difference of the 'y' values) divided by (the difference of the 'x' values)


That appears to be zero. It's a horizontal line.
6 0
3 years ago
If a number is doubled and then increasa30 the result is five less then three times number find the number
valkas [14]

Answer:

  8

Step-by-step explanation:

Let n represent the number.

  2n+3 . . . . "doubled, then increased by 30"

  3n -5 . . . . "five less than three times the number"

These two results are equal, so we have ...

  2n +3 = 3n -5

  8 = n . . . . . . . . . . add 5-2n

The number is 8.

8 0
3 years ago
Other questions:
  • if you practice a musical instrument each day for 2/3 of an hour how many hours of practice would you get in each week?
    12·1 answer
  • Question progress<br> Homework Progress<br> The ratio 8:2 in its simplest form is
    7·1 answer
  • A cleaner recommends mixing 1 1/2cup of cleaner for every 12 cups of water. What is the ratio of cleaner to water ?
    5·1 answer
  • What is the sign of −18 ​9/17 + (-18 9/17)?
    7·2 answers
  • Solve and show all work |2×+3| -6=11​
    7·1 answer
  • Please Simplify 3x+2/7
    11·1 answer
  • Find the compound ratio of 6:5cm and 2:5​
    11·2 answers
  • HELP HELP HELP PLEASE ASSP
    13·2 answers
  • Your computer password contains six characters. Each character is either a number or a letter. How many different passwords are
    5·1 answer
  • Urgent help……………………:::::::::::
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!