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
Aleks04 [339]
3 years ago
15

Sam earned $40 on his investment of $400. He earned 5% interest on his investment. How long did Sam leave his money in the bank?

Mathematics
1 answer:
gogolik [260]3 years ago
8 0

Answer:

2yrs

Step-by-step explanation:

Given parameters:

Amount of interest earned  = $40

Principal  = $400

Interest rate  = 5%

Unknown:

Time taken for the money to be in bank = ?

Solution:

   The formula for interest is given as:

         I = \frac{PRT}{100}  

    Where I is the interest

              P is the principal

               R is the rate

               T is the time

    So;

    100I  = PRT

       T  = \frac{100I }{PR}   = \frac{100 x 40}{400 x 5}  = 2yrs

You might be interested in
An athlete buys a baseball bat and pays a fee for each baseball lesson taken. The fee for each lesson is the same. The number of
jolli1 [7]

Answer:

The cost of the lessons taken

Step-by-step explanation:

Let

y -----> the total paid for the baseball bat and the lessons

c ----> the number of lessons

we have

y=25c+75

This is a linear equation in slope intercept form

y=mx+b

where

b=$75 -----> the price of he baseball bat (y-intercept)

m=25 $/lesson ----> the slope of the linear equation

therefore

25c represent the cost of the lessons taken

7 0
3 years ago
Solve the equation <img src="https://tex.z-dn.net/?f=8x%5E2%3D-36" id="TexFormula1" title="8x^2=-36" alt="8x^2=-36" align="absmi
chubhunter [2.5K]

Answer: 4(2x²+9) or i\frac{3\sqrt{2} }{2}

Step-by-step explanation:

To solve the equation by factoring, we want to set the equation to zero. In order to have the equation equal to zero, we want to add both sides by 36.

8x²=-36            [add both sides by 36]

8x²+36=0

When it comes to factoring, we want to pull out numbers or variables that are common in each term.

8x²+36=0         [take out a 4 in each term]

4(2x²+9)=0

It may seem that 2x²+9 can be factored further, it actually can't. This tells us that the factored form of the equation is 4(2x²+9)=0.

To solve the equation, we want to find the value of x. We already know the graph does not cross the x-axis because the y-intercept or vertex is (0,9).

4(2x²+9)=0       [divide both sides by 4]

2x²+9=0            [subtract both sides by 9]

2x²=-9               [divide both sides by 2]

x²=-9/2              [square root both sides]

x=\sqrt{-\frac{9}{2} } or x=i\frac{3\sqrt{2} }{2}

6 0
3 years ago
Read 2 more answers
One of the largest pumpkins ever grown weighed about 3/4 ton.How many pounds did the pumpkin weigh?
atroni [7]
1500 pounds since a ton I 2000 just multiply it by 3/4
6 0
3 years ago
Which of the following is true?
den301095 [7]

Answer:

0.3073> 0.3037

Step-by-step explanation:

how can i explain more than 20 characters duh?

4 0
3 years ago
Read 2 more answers
In a geometric sequence, the term a n+1 can be smaller than the term a n
Rainbow [258]

Do you mean a_(n+1), worded a sub (n+1)?

If so yes.  If the function of the sequence is getting smaller or more negative with each term.

6 0
3 years ago
Other questions:
  • 29,392.46<br> The 9 in the tens place is blank the value of the thousands place
    9·1 answer
  • A store sells baskets for 50% off the retail price. The retail price of a basket is $24. What is the sale price?
    9·2 answers
  • 5^-2 written as a positive exponent
    15·1 answer
  • 2 is 10 times 0.02. true or false
    15·2 answers
  • What is 0.83 as a reduced fraction
    5·2 answers
  • What is the value of the expression 5^2 + 2^2?
    14·1 answer
  • The weights of ice cream cartons are normally distributed with a mean weight of 8 ounces and a standard deviation of 0.4 ounce.
    6·1 answer
  • Draw a line representing the "rise" and a line representing the "run" of the line. State
    9·2 answers
  • Simplify the expression: -4z -6 - 7z + 3
    15·1 answer
  • Help I need help in this geometry question
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!