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Vedmedyk [2.9K]
3 years ago
11

Which equation creates an infinite number of solutions when solved for a system with

id="TexFormula1" title="y=8x-9" alt="y=8x-9" align="absmiddle" class="latex-formula">
a) y=9x-8
b) 3y-24x=-36
c) 4y+24x=-27
d) 4y-32x=-36
e) 2y+16x=-18
Mathematics
2 answers:
Tatiana [17]3 years ago
6 0

Answer:

d) 4y − 32x = -36

Step-by-step explanation:

If there are an infinite number of solutions, the equations represent the same line.

y = 8x − 9

y − 8x = -9

4y − 32x = -36

Ksivusya [100]3 years ago
6 0

Answer:

<h3>d) 4y - 32x = -36</h3>

Step-by-step explanation:

When two equations are equal, they have an infinite number of solutions when solved.

y = 8x - 9

Multiply both sides by 4.

(4)y = 4(8x - 9)

4y = 32x - 36

Subtract 32x on both sides.

4y - 32x = -36

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Compound Interest Analysis With Applications

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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

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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.

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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

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Step-by-step explanation:

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3 years ago
3(3 - 8x) - 1 = -6x - 28
Wewaii [24]

Answer:

x=2

Step-by-step explanation:

3(3 - 8x) - 1 = -6x - 28

Distribute

9 -24x -1 = -6x -28

Combine like terms

8 -24x = -6x -28

Add 24x to each side

8-24x+24x = -6x-28+24x

8 = 18x-28

Add 28 to each side

8+28 = 18x-28+28

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Divide each side by 18

36/18 = 18x/18

2 =x

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