Please help is the answer is 42

A population has the following characteristics.(a) A total of 25% of the population survives the first year. Of that 25%, 75% su

zaharov [31]

Answer:

After 1st year, the age distribution will be

$x_1 = \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

After 2nd year, the age distribution will be

$x_2 = \left[\begin{array}{ccc}5256\\396\\27\end{array}\right]$

Step-by-step explanation:

A population has the following characteristics.

A total of 25% of the population survives the first year. Of that 25%, 75% survives the second year.

The average number of offspring for each member of the population is 3 the first year, 5 the second year, and 3 the third year.

From the above information, we can construct a transition age matrix.

$A = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right]$

The population now consists of 144 members in each of the three age classes.

From the above information, we can construct the current age matrix.

$x = \left[\begin{array}{ccc}144\\144\\144\end{array}\right]$

How many members will there be in each age class in 1 year?

After 1st year, the age distribution will be

$x_1 = A \cdot x$

$x_1 = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right] \times \left[\begin{array}{ccc}144\\144\\144\end{array}\right]$

The matrix multiplication is possible since the number of columns of first matrix is equal to the number of rows of second matrix.

$x_1 = \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

After 2nd year, the age distribution will be

$x_2 = A \cdot x_1$

$x_2 = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right] \times \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

$x_2 = \left[\begin{array}{ccc}5256\\396\\27\end{array}\right]$

4 0

4 years ago

Find X please..............

Rasek [7]

What x please explain for help

5 0

4 years ago

Which table represents the same relation as the set

Sergeu [11.5K]

The complete question is
<span>Which table represents the same relation as the set {(-6,4),(-4,0),(-3,2),(-1,2)}?

we know that
in the set

</span>for the point (-6,4)
x=-6
y=4

for the point (-4,0)
x=-4
y=0

for the point (-1,2)
x=-1
y=2

for the point (-3,2)
x=-3
y=2

the table will be
x y
-6 4
-4 0
-3 2
-1 2

therefore

the answer is
the option B

the solution in the attached figure

6 0

3 years ago

The sum of three numbers is 66. The second number is 2 times the third. The first number is 10 less than the third. What are the

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

Let the three numbers be x, y, z

So from the problem given we can get the equations as :

x + y+z= 66

x=2y

z=1x/3

Now we will make equation 1 have only one variable using equation 2 and 3.

y=1x/2 since x=2y

Now using equations 1, 3 and 5 we will get

x+1x/2+1x/3=66

11x/6=66

x= 66*6/11

x= 36

y=x/2=36/2=18

z=x/3=36/3=12

Therefore:

x = 36

y=18

z=12

7 0

3 years ago

PLEASE I NEED HELP FASTTTTT

valkas [14]

Answer:

A

Step-by-step explanation:

Median= 14

Mean= 14

5 0

3 years ago