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eimsori [14]
3 years ago
10

Show how to solve this two step problem. My item is 40% off. The original price is X. Explain the two one step equations you wou

ld use to solve this (to find the sales price). a. Now, I figured out that the original cost was $145, what is the real sales price?
Mathematics
1 answer:
fredd [130]3 years ago
4 0
40% of (times) X
4/10 of (times) X or 2/5 or .4
145 (times) .4 which is 58
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Work the problem for each card, look for the solution at the top of the next card. Use space and show all work
Vinil7 [7]

Answer:Mathematics of Money:

Compound Interest Analysis With Applications

This site is a part of the JavaScript E-labs learning objects for decision making. Other JavaScript in this series are categorized under different areas of applications in the MENU section on this page.

Professor Hossein Arsham    

Compound Interest: The future value (FV) of an investment of present value (PV) dollars earning interest at an annual rate of r compounded m times per year for a period of t years is:

FV = PV(1 + r/m)mt

or

FV = PV(1 + i)n

where i = r/m is the interest per compounding period and n = mt is the number of compounding periods.

One may solve for the present value PV to obtain:

PV = FV/(1 + r/m)mt

Numerical Example: For 4-year investment of $20,000 earning 8.5% per year, with interest re-invested each month, the future value is

FV = PV(1 + r/m)mt   = 20,000(1 + 0.085/12)(12)(4)   = $28,065.30

Notice that the interest earned is $28,065.30 - $20,000 = $8,065.30 -- considerably more than the corresponding simple interest.

Effective Interest Rate: If money is invested at an annual rate r, compounded m times per year, the effective interest rate is:

reff = (1 + r/m)m - 1.

This is the interest rate that would give the same yield if compounded only once per year. In this context r is also called the nominal rate, and is often denoted as rnom.

Numerical Example: A CD paying 9.8% compounded monthly has a nominal rate of rnom = 0.098, and an effective rate of:

r eff =(1 + rnom /m)m   =   (1 + 0.098/12)12 - 1   =  0.1025.

Thus, we get an effective interest rate of 10.25%, since the compounding makes the CD paying 9.8% compounded monthly really pay 10.25% interest over the course of the year.

Mortgage Payments Components: Let where P = principal, r = interest rate per period, n = number of periods, k = number of payments, R = monthly payment, and D = debt balance after K payments, then

R = P × r / [1 - (1 + r)-n]

and

D = P × (1 + r)k - R × [(1 + r)k - 1)/r]

Step-by-step explanation:

3 0
3 years ago
Find f(-2) for f(x) = 2(4)^x
stepladder [879]

Answer:

2(4)^-2

=2/4^2

2/16

1/8

thanks

3 0
3 years ago
Read 2 more answers
Find the length of OC.
frosja888 [35]

Answer:

About 8

Step-by-step explanation:

I found this by doing 16 divided by 2 since half of 16 is 8and AC and OC are congruent so I think it is 8.

6 0
3 years ago
Read 2 more answers
Would the answer be <br> 40, 10 ?
Eduardwww [97]

Answer:

yeah the answer is (40,10)

6 0
2 years ago
Is 3/8 greater that 1/2
belka [17]

Answer:

no

Step-by-step explanation:

3 0
3 years ago
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