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weqwewe [10]
3 years ago
14

Please I need help

Mathematics
2 answers:
Dimas [21]3 years ago
8 0

Answer:

Step-by-step explanation:

The directrix is a vertical line, so the parabola is horizontal. The focus lies to the left of the directrix, so the parabola opens to the left.

For a left-opening parabola:

x = a(y-k)²+h,

a < 0,

vertex (h,k)

focal length p = 1/|4a|

focus (h-p, k)

directrix: x=h+p

Apply your data

focus (1,-4)

directrix x=2

vertex (1.5,-4).

focal length p = 0.5

a = -1/|4p| = -½

x = -½(y-2)²+ ½

masha68 [24]3 years ago
4 0

Answer:

x= -(y+4)^2/2 +3/2 is the correct answer.

Step-by-step explanation:

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<h3>Further explanation   </h3>

Given:  

  • The typical balance on Lucy's credit card is $650.
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Question:  

How much in interest would you expect Lucy to be charged in a typical month?

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This problem includes the type of determining simple interest.

\boxed{ \ I = P \times r \times t \ }  

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Let us calculate how much in interest we would expect to be charged in a typical month.

\boxed{ \ = 650 \times \frac{18}{100} \times \frac{1}{12} \ }  

\boxed{ \ = 65 \times \frac{3}{10} \times \frac{1}{2} \ }  

\boxed{ \ = \frac{195}{10} \times \frac{1}{2} \ }  

\boxed{ \ = \frac{97.5}{10} \ }  

\boxed{ \ = \frac{975}{100} \ }  

Thus the amount of interest we would expect Lucy to be charged in a typical month is $ 9.75.

_ _ _ _ _ _ _ _ _ _

Notes  

We must be able to distinguish between simple and compound interest. Please learn about this in the link attached below.

<h3>Learn more   </h3>
  1. What interest (in dollars) does he receive annually?  brainly.com/question/8192969    
  2. How much will our account accrue to in 9.5 years brainly.com/question/4127036  
  3. What is the total amount owed at the end of the 4 years brainly.com/question/13675435
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