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Soloha48 [4]
3 years ago
7

The number of cars at a dealership dropped from 64 to 48 after a weekend sale. What is the percent of decrease in the number of

cars?
Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
5 0

Answer:

25%

Step-by-step explanation:

Mademuasel [1]3 years ago
3 0
The answer is 25%

(1)
If 64 is 100%, 48 is how much percent:
64 : 100% = 48 : x
x = 100% * 48 : 64
x = 75

(2)
Percent of decrease is:
100% - x = 100% - 75% = 25%
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what positive number satisfies the condition that twice the number minus three times the reciprocal of the number is equal to 1?
marshall27 [118]
Solve:

"<span>twice the number minus three times the reciprocal of the number is equal to 1."
                                                     3(1)
Let the number be n.  Then 2n - ------- = 1
                                                       n

Mult all 3 terms by n to elim. the fractions:

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We need to find the roots (zeros or solutions) of this quadratic equation.

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disc. = (-1)^2 - 4(2)(-3) = 1 + 24 = 25.

That's good, because 25 is a perfect square.
                -(-1) plus or minus 5         1 plus or minus 5
Then x = ------------------------------ = --------------------------
                            2(2)                                  4

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2 years ago
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For your sequence, this is
  an = -8·(-2/3)^(n-1)
6 0
3 years ago
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