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Aleks04 [339]
2 years ago
4

4. Cindy bought a car for $21.330. A few years later, she sold the car for $19,700. Find the percent of change in the value

Mathematics
2 answers:
Leokris [45]2 years ago
8 0

Answer:

-7.64%

Step-by-step explanation:

VikaD [51]2 years ago
5 0

Answer:

-7.64%

Step-by-step explanation:

1. Find out how much the car went down in value.

    21,330 - 19,700 = 1,630

2.  Calculate how much 1% of the original value ($21,330) was. One percent is 1/100, which is .01 when divided.

    21,330 × .01 = 213.3

3. Since we now know 1% is equal to $213.30 we can divide $1,630 by $213.30. Doing this will show us how many 1%s are in 1,630.

    1,630/213.30 = 7.64181903

4. There are 7.64181903 1%s in 1,630. Because the car's value went down by 1,630, this also means it went down by 7.64181903% We will round this to the nearest hundredth for simplicity's sake.

    7.64181903 → 7.64<u>1</u> one is less than 6 so we will round down → 7.64

5. The car decreased by 7.64% in value. This will be written as -7.64% because a decrease is negative.

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Answer:

Peculiar purples would be more abundant

Step-by-step explanation:

Given that eculiar Purples and Outrageous Oranges are two different and unusual types of bacteria. Both types multiply through a mechanism in which each single  bacterial cell splits into four. Time taken for one split is 12 m for I one and 10 minutes for 2nd

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a) Here P0 =3, time t = 60 minutes.

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ii) II bacteria P = 3(4)^{4} =768

b) Since II is multiplying more we find that I type will be more abundant.

The difference in two hours would be

3(4)^{10}- 3(4)^{8} =2949120

c) i) P=P_0 (4)^{t/12} for I bacteria where t is no of minutes from start.

ii) P=P_0 (4)^{t/10} for II bacteria where t is no of minutes from start. P0 is the initial count of bacteria.

d) At time 36 minutes we have t = 36

Peculiar purples would be

i) P=3 (4)^{36/12}=192

The rate may not be constant for a longer time.  Hence this may not be accurate.

e) when splits into 2, we get

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What is the minimum number of points needed to determine the equation of a line containing those points?. The choices are the fo
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