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Harman [31]
4 years ago
5

If a = 1/x − 1/y , what is the value of 1/a ?

Mathematics
1 answer:
DerKrebs [107]4 years ago
8 0

Answer:

  1/a = xy/(y-x)

Step-by-step explanation:

Simplify the reciprocal:

  1/a = 1/(1/x -1/y) = 1/((y-x)/(xy))

  1/a = xy/(y-x)

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The original cost was $50.

Step-by-step explanation:

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nordsb [41]

Answer:

<u>A. V (2) = $ 391,114.50</u>

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Step-by-step explanation:

Given formula:

V(t) = 420,000 * (0.965)^t

A. What would be worth the car′s worth in 2 years?

V(t) = 420,000 * (0.965)^t

We replace t by 2, as follows:

V(2) = 420,000 * (0.965)²

V(2) = 420,000 * 0.931225

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B. In how many years will the car be worth $325,000?

V(t) = 420,000 * (0.965)^t

We replace V(t) by 325,000, as follows:

325,000 = 420,000 * (0.965)^t

325,000/420,000 = (0.965)^t

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t = log 0.965(0.7738)  

t = log 0.7738/log 0.965  

<u>t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days  </u>

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Step-by-step explanation:

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3 years ago
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