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2 years ago

Solve the equation.(Y-9)-(y+2)=4y

Mathematics

2 answers:

Gemiola [76]2 years ago

7 0

Exact form:
Y = -11/4
Decimal form: Y=-2.75

Marina86 [1]2 years ago

3 0

Answer:

-11/4

Step-by-step explanation:

-11=4y

-11+11=4y+11

0=4y+11

0-4y=4y+11-4y

-4y=11

-4y/-4=11/-4

y=-11/4

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The rate of interest on the loan is 7.5% i.e. 0.075 and it was for the duration of 10 years.

Also, it is given that the loan was compounded annually.

We have the formula as,

$P=\frac{\frac{r}{n}\times PV}{1-(1+\frac{r}{n})^{-t\times n}}$

i.e. $PV=\frac{P\times [1-(1+\frac{r}{n})^{-t\times n}]}{\frac{r}{n}}$

Substituting the values, we get,

i.e. $PV=\frac{P\times [1-(1+\frac{0.075}{12})^{-10\times 12}]}{\frac{0.075}{12}}$

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i.e. $22000=\frac{P\times [1-(1.00625)^{-120}]}{0.00625}$

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