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Hunter-Best [27]
3 years ago
9

100 POINTS PLZ ANSWER QUICKLY AND TRUTHFULLY

Mathematics
1 answer:
erik [133]3 years ago
7 0

Answer:

Step-by-step explanation:

Part IV

There are 365/5 = 53 five day periods in a year

She would pay $180(53) = $9,540 to borrow the money for a full year

APR = 100(9540 / 2400) = 397.5%

Part V

The $180 fee seems to be a better deal

At 500% interest a year would cost 2400(5) = $12000

5 days would cost 12000/53 = $226.42

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Prove algebraically that r = 10/2+2sinTheta is a parabola
Xelga [282]

Answer:

y =  -  \frac{ 1 }{10} {x}^{2}   +  \frac{5}{2}

Step-by-step explanation:

We want to prove algebraically that:

r =  \frac{10}{2 + 2 \sin \theta}

is a parabola.

We use the relations

{r}^{2}  =  {x}^{2}  +  {y}^{2}

and

y = r \sin \theta

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r(2 + 2 \sin \theta) = 10

Or

r(1+  \sin \theta) = 5

Expand :

r+  r\sin \theta= 5

We now substitute to get:

\sqrt{ {x}^{2}  +  {y}^{2} }  + y = 5

This means that:

\sqrt{ {x}^{2}  +  {y}^{2} }=5 - y

Square:

{x}^{2}  +  {y}^{2} =(5 - y)^{2}

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{x}^{2}  +  {y}^{2} =25 - 10y +  {y}^{2}

{x}^{2}  =25 - 10y

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3 years ago
I need help please!!!!!!!
KATRIN_1 [288]

Answer:

C

Step-by-step explanation:

I don't know for sure, but I am pretty sure this is it.

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2 years ago
Read 2 more answers
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