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jolli1 [7]
3 years ago
15

The initial population of a town is 3900, and it grows with a doubling time of 10 years. What will the population be in 8 years.

What will the population be in 8 years? What will the population be in 8 years?
This is the problem, I am trying to get the formula for 2 t/T double? The help me solve and example don't show me how to work the problem, it just gives the answer 2 14/8 double ~=~ 2 t/T double, i don't know how the answer is found,
Mathematics
2 answers:
MA_775_DIABLO [31]3 years ago
7 0

the initial population of a town is 3300

after 10 years: 3300 + 3300*(10/10) = 6600

after 12 years: 6600 + 6600*(2/10) = 7920

Montano1993 [528]3 years ago
5 0

Answer:

5746

Step-by-step explanation:

Given that the initial population of a town is 3900, and it grows with a doubling time of 10 years.

i.e. population grows exponentially as

P(t) = 3900 (2)^{\frac{t}{10} }

Using this we can calculate population for 8 years

P(8) = 3900(2)^{\frac{8}{10} } \\=5745.63\\~5746

Population in 8 years is 5746

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UNO [17]

9514 1404 393

Answer:

  A. 3×3

  B. [0, 1, 5]

  C. (rows, columns) = (# equations, # variables) for matrix A; vector x remains unchanged; vector b has a row for each equation.

Step-by-step explanation:

A. The matrix A has a row for each equation and a column for each variable. The entries in each column of a given row are the coefficients of the corresponding variable in the equation the row represents. If the variable is missing, its coefficient is zero.

This system of equations has 3 equations in 3 variables, so matrix A has dimensions ...

  A dimensions = (rows, columns) = (# equations, # variables) = (3, 3)

Matrix A is 3×3.

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B. The second row of A represents the second equation:

  0x_1+1x_2+5x_3=-1

The coefficients of the variables are 0, 1, 5. These are the entries in row 2 of matrix A.

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C. As stated in part A, the size of matrix A will match the number of equations and variables in the system. If the number of variables remains the same, the number of rows of A (and b) will reflect the number of equations. (The number of columns of A (and rows of x) will reflect the number of variables.)

6 0
2 years ago
If an interior angle of a regular polygon measures 140*, how many sides does it have?
Katen [24]

Answer:

9 sides.

Step-by-step explanation:

N is the # of sides.

140 = ((n-2) x 180) / n

Multiply both sides by n

140 n = (n-2) x 180

Distribute the right side

140 n = 180 n - 360

Subtract 140 n and add 360 to both sides.

40 n = 360

n = 9

5 0
3 years ago
I desperately need help !
Lorico [155]

Answer:

t = 9.57

Step-by-step explanation:

We can use trig functions to solve for the t

Recall the 3 main trig ratios

Sin = opposite / hypotenuse

Cos = adjacent / hypotenuse

Tan = opposite / adjacent.

( note hypotenuse = longest side , opposite = side opposite of angle and adjacent = other side )

We are given an angle as well as its opposite side length ( which has a measure of 18 ) and we need to find its adjacent "t"

When dealing with the opposite and adjacent we use trig ratio tan.

Tan = opp / adj

angle measure = 62 , opposite side length = 18 and adjacent = t

Tan(62) = 18/t

we now solve for t

Tan(62) = 18/t

multiply both sides by t

Tan(62)t = 18

divide both sides by tan(62)

t = 18/tan(62)

t = 9.57

And we are done!

3 0
2 years ago
Read 2 more answers
A fair coin is tossed 6 times. Compute the probability of tossing 6 tails in a row.
Fofino [41]

Answer:

1/6

Step-by-step explanation:

5 0
3 years ago
What is the answer to 72=3/4c
Darina [25.2K]

First, we take the 3/4 and multiply 72 by it's reciprocal, 4/3. Your answer would come to c= 96.

Hope this helped :)


8 0
3 years ago
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