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lyudmila [28]
3 years ago
6

In 1930, the population of the western United States was 12.32 million people and it has grown exponentially with a rate of chan

ge of 2.47%. Find a function which models the growth of the western United States after x years after 1930.
Mathematics
1 answer:
Sergio [31]3 years ago
5 0

9514 1404 393

Answer:

  p(x) = 12.32(1.0247^x)

Step-by-step explanation:

The population will be the product of the 1930 value and the multiplier for each year, applied a number of times equal to the number of years. The multiplier (growth factor) will be (1 +growth rate) = 1 +2.47% = 1.0247. An exponent is used to say how many times this multiplier is applied to the initial value:

  p(x) = 12.32(1.0247^x) . . . . . population in millions x years after 1930

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How do you solve 5y^2 – 33y + 18 = 0 for y
marshall27 [118]

Answer:

5

Step-by-step explanation:

5*2 = 10-33 = -23+18=5

8 0
4 years ago
Which could be a conditional relative frequency table? A 4-column table with 3 rows. The first column has no label with entries
kotykmax [81]

Answer:

<u>II. Second table</u>

              A              B            Total

C           0.25         0.75          1.00

D           0.35         0.65          1.00

Total     0.30         0.70          1.00

Explanation:

<h2>Tables</h2>

<u>I. First table </u>

              A              B            Total

C           0.25          0.25          0.50

D           0.25          0.25          0.50

Total     0.50          0.25           1.00

<u>II. Second table</u>

              A              B            Total

C           0.25         0.75          1.00

D           0.35         0.65          1.00

Total     0.30         0.70          1.00

<u>III. Third table</u>

<u></u>

             A              B            Total

C          0.75         0.25          0.50

D          0.25         0.75          0.50

Total    0.50         0.50          1.00

<u>IV. Fourth table</u>

              A              B            Total

C          0.65         0.35         1.00

D          0.35         0.65          1.00

Total     1.00          1.00          1.00

<h2>Solution</h2>

A <em>conditional relative frequency table</em> shows the relative frequencies determined upon a row or column.

There are two types of relative conditional frequency table: 1) row conditional relative frequency, and 2) column conditional relative frequency.

When you divide the joint frequency by the marginal frequency of the column total you have the row conditional frequency table. When you dividethe joint frequency by the row total you have the colum conditional frequency table.

In a row conditional relative frequency each total of the right hand column equals 1. This is the case of the second table.

In a column conditional relative frequency each total of the bottom row equals 1. This is not happening with any of the shown tables.

Hence, only the second table could be a conditional relative frequency table.

5 0
3 years ago
Read 2 more answers
Can someone please help me?
I am Lyosha [343]
I used to look at the examples i can’t remember now what it is but look at the examples
7 0
3 years ago
Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it
TiliK225 [7]

Answer:

\dfrac{9}{25}

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}

Now, the <em>required probability</em> can be found as:

P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }

3 0
3 years ago
Brian parked in a parking garage 4 floors under ground. Herode an elevator up 17
Law Incorporation [45]

Answer:

Floor ride up to = 13 floor

Step-by-step explanation:

Given:

Parking garage = 4 floors under ground

Elevator up-to = 17 floor

Find:

Floor ride up to

Computation:

Floor ride up to = Elevator up-to - Parking garage

Floor ride up to = 17 floor - 4 floor

Floor ride up to = 13 floor

7 0
3 years ago
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