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goldfiish [28.3K]
3 years ago
10

Jonathon saves $4,000 at the end of each quarter for 10 years. Assume 12% compounded quarterly and find the present value.

Mathematics
1 answer:
charle [14.2K]3 years ago
5 0

Answer:

Results are below.

Step-by-step explanation:

1. <u>First, we need to calculate the Future Value:</u>

FV= {A*[(1+i)^n-1]}/i

A= quarterly deposit

n= 10*4= 40

i= 0.12/4= 0.03

FV= {4,000*[(1.03^40) - 1]} / 0.03

FV= $301,605.04

Now, the present value:

PV= FV/(1+i)^N

PV= 301,605.04/(1.03^40)

PV= $92,459.09

2. <u>First, we need to calculate the value of the first year of college:</u>

FV= PV*(1+i)^n

FV= 24,000*(1.04^3)

FV= $26,996.74

Now, the quarterly payments:

FV= {A*[(1+i)^n-1]}/i

A= quarterly deposit

Isolating A:

A= (FV*i)/{[(1+i)^n]-1}

i= 0.08/4= 0.02

n= 3*4= 12

A= (26,996.74*0.02) / [(1.02^12) - 1]

A= $2,012.87

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I need help to solve this
sladkih [1.3K]

Answer:

Step-by-step explanation:

The catch is to put this into the quadratic and solve for a b and c in three equations.

x = 1

a(1)^2 + b(1) + c= 0            

a + b + c + 0                (1)

x = - 1

a(-1)^2 + b(-1) + c = 2

a - b + c = 2                 (2)

x = 2

a(2)^2 + b(2) + c = 8

4a + 2b + c = 8            (3)

===================

Add 1 and 2 together

a + b + c = 0

a - b + c = 2

2a + 2c = 2           Divide by 2

a + c = 1                       (4)  

=====================

Multiply (2) by 2

2a - 2b + 2c = 4          (5)

======================

Add (5) + (3)

2a - 2b + 2c = 4

4a + 2b + c = 8

6a + 3c = 12               (6)

=====================

Multiply (4) by 3

3a + 3c = 3                 (7)

===================

Subtract (7) from (6)

6a + 3c = 12

3a + 3c =  3

3a = 9                      Divide by 3

3a/3 = 9/3

a = 3

=============

Use (4) to find c

a + c = 1

3 + c = 1                  Subtract 3 from both sides

3-3 + c = 1-3

c = - 2

=================

Use 1 to find b

3 + b - 2 = 0          Combine 3 and -2

1 + b = 0                Subtract 1 from both sides

b = - 1              

====================

Answers

a = 3

b = - 1

c = - 2

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4 years ago
The numerator of a rational number is less that it’s denominator by 7.If the new number becomes 3/2 when the numerator is triple
Murljashka [212]

Answer:

\frac{23}{30}

Step-by-step explanation:

let the denominator of the original fraction be x, then

\frac{x-7}{x} ← is the original fraction

After the given changes, that is

\frac{3(x-7)}{x+16} = \frac{3}{2} ( cross- multiply )

6(x - 7) = 3(x + 16) ← distribute parenthesis on both sides

6x - 42 = 3x + 48 ( subtract 3x from both sides )

3x - 42 = 48 ( add 42 to both sides )

3x = 90 ( divide both sides by 3 )

x = 30

Thus

\frac{30-7}{30} = \frac{23}{30} ← the original rational number

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Hello! First things first, we need to find the area of the table. Just by doing some basic math, 10 * 17 is 170. The area of the computer table is 170 square feet. The table costs $16 per square feet. To find the total cost, all you have to do is multiply the area of the table by the cost per square foot. 170 * 16 is 2,720. The computer table will cost $2,720.
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If 4.2 cups equals 1 liter, how many liters equals 21 cups?
kompoz [17]
21 cups/ 4.2L per cup =5 L total
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Find the difference. Write you answer in simplest form.<br> 9/10 - 4/10
enyata [817]

Answer:

1/2

Step-by-step explanation:

hope it helps :)

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