A population of bacteria is growing according to the equation P (t)=1100e^0.04t. Estimate when the population will exceed 1455.

Answers

Answer 1

Solution:

\(p(t)=1100e^{0.04t}\)

We want to estimate the population when the population exceed 1455

Set p(t) = 1455 and solve for t

\(\begin{gathered} 1100e^{0.04t}=1455 \\ Divide\text{ both sides by 1100} \\ \frac{1100e^{0.04t}}{1100}=\frac{1455}{1100} \\ \\ e^{0.04t}=1.322727 \\ lne^{0.04t}=ln1.322727 \\ 0.04t=0.27763 \\ t=\frac{0.27763}{0.04} \\ t=6.99 \end{gathered}\)

Thus, the population will exceed 14551 after 6.99 years


Related Questions

one side of a rectangle is 2 inches longer than the other side. find the lengths of both sides if the area of the rectangle is 15 square inches

Answers

The dimensions of the rectangle are 3 inches by 5 inches.

Let x be the length of one side of the rectangle. Then the other side is 2 inches longer, so its length is x + 2. The area of the rectangle is given by A = L × W, where L is the length and W is the width.

We are told that the area of the rectangle is 15 square inches, so we can set up the equation:

x(x + 2) = 15

Expanding the left side, we get:

x^2 + 2x = 15

Subtracting 15 from both sides, we get:

x^2 + 2x - 15 = 0

We can factor the left side of the equation to get:

(x + 5)(x - 3) = 0

Therefore, either x + 5 = 0 or x - 3 = 0. Solving for x in each case, we get:

x = -5 or x = 3

Since the length of a side cannot be negative, we must reject the solution x = -5. Therefore, the length of one side of the rectangle is x = 3 inches. The other side is 2 inches longer, so its length is x + 2 = 5 inches. Therefore, the dimensions of the rectangle are 3 inches by 5 inches.

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Answer:

Longer side: 5 in.

Shorter side: 3 in.

Step-by-step explanation:

You can start by looking at the integer values. To do that, we can find the factors of 15.

The factors are:

1, 3, 5, and 15

Is there a pair so that one number is 2 more than the other?

Yes. The pair 3, 5 are 2 numbers away from each other, and they multiply to get 15.

Hope this helps.

What is the nth term of the sequence below?

2, 6, 12, 20, . . .

A. \(n {}^{2} \: + \: 1\)

B. \(3n\)

C. \(n(n \: + \: 1)\)

D. \( {n}^{2} \: - \: 1\)

Answers

Answer:

Option C

Kindly award branliest

Step-by-step explanation:

Tn = n(n + 1)

T1 = 1(1 +1) = 1(2) = 2

T2 = 2(2+1) = 2(3) =6

T3 = 3(3 + 1) = 3(4) = 12

T4 = 4(4 + 1) = 4(5) = 20

... It obeys

Solve the equation.
Give your simplified answer as an improper fraction.
-4(3 + x) + 5 = 4(x + 3)

Answers

Answer:

x = \(\frac{5}{8}\)

Step-by-step explanation:

Given

- 4(3 + x) + 5 = 4(x + 3) ← distribute parenthesis on both sides

- 12 - 4x + 5 = 4x + 12 , that is

17 - 4x = 4x + 12 ( subtract 4x from both sides )

17 - 8x = 12 ( subtract 17 from both sides )

- 8x = - 5 ( divide both sides by - 8 )

x = \(\frac{-5}{-8}\) = \(\frac{5}{8}\)

What is x divided by x?

Answers

Answer:

its 1

Step-by-step explanation:

the value of x and x is like having 1÷1 = 1

same with x : x÷x=1

since x is just a value

When x is divided by x , it's 1.

What is division?

Division is the process of splitting a number or an amount into equal parts.

Here, given that,

x is divided by x

=x/x

=1.

Hence, When x is divided by x , it's 1.

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Speed of Cart Over Time
35
30
25
20
Speed (miles per hour)
15
10
5
1 2 3 4 5 6 7 8
Time (minutes)
At approximately what time did the speed of the cart begin to decrease?

Answers

Step-by-step explanation:

OMG!!??!!?? SCIENTISTS TRANSFORM 6IX9INE INTO A RAT?!??????!!?! LOOK AT HIM!!!!!!!!

Solve using substitution.

8x + 9y = –17
y = –9

Answers

SUBSTITUTE -9 as y in the equation

8x + 9(-9) = -17
8x + (-81) = -17
8x -81 = -17

COLLECT LIKE TERMS

8x = -17 + 81
8x = 81 - 17
8x = 64

DIVIDE BOTH SIDES BY 8

8x/8 = 64/8
x = 8

Therefore, y = -9 and x = 8

System analysts define an object's attributes during the systems design process. true or false?

Answers

The statement "System analysts define an object's attributes during the systems design process" is true because  defining object attributes is an essential part of the systems design process to ensure that the system meets the desired functional requirements.

In systems design, objects are used to represent real-world entities that are relevant to the system being developed. These objects have attributes that describe their characteristics or properties, which are used to identify and manipulate them within the system. System analysts define these attributes during the systems design process to ensure that the system meets the desired functional requirements.

For example, in a library system, a book object may have attributes such as title, author, publisher, and ISBN. Defining these attributes helps ensure that the system can properly manage and retrieve books as needed. Object-oriented design is a popular approach to systems design that relies heavily on defining objects and their attributes.

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x + y = 3
2x - y = -9

Answers

Answer:

\(sum \: two \:eqations \\ 3x = - 6 \\ x = - 2 \\ - 2 + y = 3 \\ y = 5\)

what is the solution to the number sentence 18= b/-3 -4

Answers

Answer:

b = -66.

Step-by-step explanation:

\(18 = \frac{b}{ - 3} - 4 \\ = - 3(18) = - 3 \times \frac{b}{ - 3} - 4( - 3) \\ = - 54 = b + 12 \\ = - 54 - 12 = b \\ = - 66 = b\)

Solve: 15x - 12 + 7 x + 6 = 60

Answers

Answer:

The answer is 3

Step-by-step explanation:

If you combine like terms you get 22x - 6 = 60

Then you set the numbers and x's apart = 22x = 66

Then you divide and get 3

Answer is X=3

15x-12+7x+6=60
Explanation:
22x-12+6=60
22x-6=60
22x=60+6
22x=66
Divide both sides by 22
And x=3

4) Find the area of the shaded region (everything but the circles). Express your
answer in terms of a. -(For example: don't actually do the last step of multiplying
the number by a, instead leave your answer looking like 32.1. F
whole
3 in
sin
216
Sin
9 in
12 in
18 in

4) Find the area of the shaded region (everything but the circles). Express youranswer in terms of a.

Answers

Answer:

L

Step-by-step explanation:

does the value of an expression mean the answer?

Answers

Answer:

The value of a mathematical expression is the result of the computation described by this expression when the variables and constants in it are assigned values. The value of a function, given the value(s) assigned to its argument(s), is the value assumed by the function for these argument values.

Step-by-step explanation:

Yes, the value of an expression does mean the answer.

The value of an expression is a variable that is assigned to a number.

Lets say we have 3n + 2 = 10.

"n" is the variable and we need to find the value of it.

In that kind of question, that is the answer for an expression.

But there are cases where we have the value and we need to solve with it. Then, the value would not be the answer.

Best of Luck!

Solve the equation. If the equation is an identity, choose identity. If it has no solution, choose no solution.
−12x+1=7x−14

Answers

Answer: x=15/19 =0.789

Step-by-step explanation:  -12*x+1-(7*x-14)=0

  -19x+15 = 0  

Subtract  15  from both sides of the equation :  

                     -19x = -15

Multiply both sides of the equation by (-1) :  19x = 15

Divide both sides of the equation by 19:

                    x = 15/19 = 0.789

x = 15/19 = 0.789

jillian and dawn are playing a game of miniature golf in this game the score on a hole is the number of putts it takes to get the ball into the hole the winner is the player with the lowest score after playing 18 holes jillians mean is 2.4 and dawn mean is 3.3 .which explains who won the game

Answers

The person that won the game is Jillian because the person with the lower mean took fewer putts on average for each hole.

What is a Mean?

This refers to the standard of measurement where a given data is collated and the average is found.

Hence, we can see that because of the game of golf played by Jillian and Dawn, there is a mean of 2.4 for Jillian and 3.3 for Dawn after playing 18 holes and Jillian's is lower because he took fewer putts on average for each hole.

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What is the range and domain of this graph?

What is the range and domain of this graph?

Answers

Answer:

Range: (-∞,∞)

Domain: (-∞,∞)

Step-by-step explanation:

Remember that if there are arrows that the function continues.

Solve the system of equations y = x + 5 and y = 5x - 11 using a graphical method.

A)

(4,9)

B)

(9.14)

C)

(9.4)

Eliminat

D)

(14,9)

Answers

The answer is A) (4,9).

To solve the system of equations y = x + 5 and y = 5x - 11 using a graphical method, we can graph both lines on the same coordinate plane and find the point where they intersect, which will be the solution of the system.

To graph the first equation, y = x + 5, we can start with the y-intercept, which is 5, and use the slope of 1 to find another point. For example, if we move one unit to the right, we will also move one unit up, and we will get the point (1,6). We can then draw a line through these two points.

To graph the second equation, y = 5x - 11, we can start with the y-intercept, which is -11, and use the slope of 5 to find another point. For example, if we move one unit to the right, we will move five units up, and we will get the point (1,-6). We can then draw a line through these two points.

Now we can see that the two lines intersect at the point (4,9), which is the solution of the system. Therefore, the answer is A) (4,9).

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Find f. f ''(theta) = sin(theta) + cos(theta), f(0) = 4, f '(0) = 1

Answers

The function f(theta) is:

f(theta) = sin(theta) + cos(theta) + 3

To find the function f, we will integrate the given second derivative with respect to theta twice, and use the initial conditions to determine the constants of integration.

First, integrating f ''(theta) = sin(theta) + cos(theta) with respect to theta gives:

f '(theta) = -cos(theta) + sin(theta) + C1

where C1 is a constant of integration.

Next, integrating f '(theta) = -cos(theta) + sin(theta) + C1 with respect to theta gives:

f(theta) = sin(theta) + cos(theta) + C1*theta + C2

where C2 is another constant of integration.

To determine the values of C1 and C2, we use the initial conditions:

f(0) = 4 gives us:

4 = sin(0) + cos(0) + C1*0 + C2

4 = 1 + C2

so C2 = 3.

f '(0) = 1 gives us:

1 = -cos(0) + sin(0) + C1

1 = 1 + C1

so C1 = 0.

Therefore, the function f(theta) is:

f(theta) = sin(theta) + cos(theta) + 3

Note that there are other ways to express this function, such as using trigonometric identities to simplify the expression, but this is the most general form.

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Find the surface area of the pyramid.

Find the surface area of the pyramid.

Answers

Answer:

319

Step-by-step explanation:

So, to find the surface area, first we find the base area, which is: 11 x 11 = 121

Then, we have to find the area of the other faces. Since each face is a triangle, we can use the formula A = 1/2 x b x h.

So,

b = 11

h = 9

1/2 x 11 x 9 = 49.5

The, we multiply by 4, the number of sides: 49.5 x 4 = 198

Then, we add the 2, values: 121 + 198,

Which gives us: 319.

Hope this helped!

A variable star is one whose brightness alternatelyincreases and decreases. For the most visible star, DeltaCephei, the time between periods of maximum brightness isabout 6 days. The average brightness (magnitude) of thestar is 4.0 and its brightness varies from a low of 3.5 to a highof 4.5 magnitudes.

A variable star is one whose brightness alternatelyincreases and decreases. For the most visible star,

Answers

A function that models the brightness of the star as a function of time is

M = -.35 sin (t • pi/2.7) + 4.4

What is a function ? In mathematics, a function from a set X to a set Y assigns exactly one element of Y to each element of X. The set X is called the domain of the function and the set Y is called the codomain of the function.Calculation

First, let's create a table to find when the star will be at its maximum, minimum and its average, and what direction the magnitude will be moving at that time.

t = 0, M = 4.4 +

t = 1.35, M = 4.75 -

t = 2.7, M = 4.4 -

t = 4.05, M = 4.05 +

t = 5.4, M = 4.4 +

t = 6.75, M = 4.75 -

The t=0, entry is given by the parenthetical.  The period is given as 5.4 days (the time between the start of each cycle), so the star will reach its maximum at 1.35 days, return to average at 2.7 days, reach its minimum at 4.05 days, return to average at the period interval, 5.4 days, and then reach maximum again in 6.75 days.  The difference between 6.75 and 1.35 days (the time between maximums) is 5.4 days, as required.

There are many functions that might be chosen, I would choose a sine or cosine function.  The choice between sine and cosine is usually best done on whether you want the initial value of the function to be 0 (sine) or 1 (cosine).  Here, we start at the average value, so we are better off starting with sine.  The amplitude of the sine function needs to be the change from the average value (positive or negative) or .35, since the sine of 0, pi, 2pi, 3pi ... is 0, we need to move the center line of the sine function up by 4.4, the average value of the magnitude.  Finally, we need multiply the time value in order to adjust the time into the appropriate radian measure for the 5.4 day period.  So we want

0 days -> 0 radians

1.35 days -> pi/2 radians

2.7 days -> pi radians

4.05 days -> 3pi/2 radians

5.4 days -> 2pi radians

So we need to divide each time value by half the period (2.7) and multiply it by pi or pi/2.7.

Thus, the best sinusoidal equation is

M = .35 sin (t • pi/2.7) + 4.4

This assumes that a magnitude of 4.75 is brighter than 4.4, which would be brighter than 4.05.  If magnitude works the other way, then all you need to do is change the sign or the equation, i.e.

M = -.35 sin (t • pi/2.7) + 4.4

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please help me fill in the boxes its due tomorrow

please help me fill in the boxes its due tomorrow

Answers

Answer:

1- 80 miles

2- 3 hours

3- 35 mph

4- 180 miles

5- 5 hours

6- 15 mph

Step-by-step explanation:

if you travel at 40 miles every hour, then in 2 hours you'll travel 80 miles.


Simplify each expression. x¹/₆ . x¹/₃

Answers

Answer....................:)
Simplify each expression. x/ . x/


Solve each equation. 4t = 48

Answers

The answer is t=12 divide 4t and 48 by 4

What is the surface area of the triangular prism formed by the net shown below?

What is the surface area of the triangular prism formed by the net shown below?

Answers

The surface area of the triangular base prism is 18.87 cm².

How to find the surface area of a prism?

The prism is a triangular base prism . Therefore, the surface area of the prism can be found as follows:

Surface area of the prism  = (a + b + c)l + bh

where

a, b and c are the triangle sidel = height of the prismb = base of the triangleh = height of the triangle

Therefore,

a = 1 cm

b = 1 cm

c = 1 cm

l = 6 cm

b = 1 cm

h = 0.87 cm

Therefore,

surface area of the triangular prism = (1 + 1 + 1)6 + 1(0.87)

surface area of the triangular prism =3(6) + 0.87

surface area of the triangular prism = 18 + 0.87

surface area of the triangular prism = 18.87 cm²

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Your younger brother is getting stickers from a vending machine at the local supermarket. A proportion of stickers have the phrase "Girls
Rule!" If there are 12 stickers with this message in a sample of 36 stickers, what is the 95% confidence interval for this proportion? (1 point)

O a (0.1764, 0.4836)
Ob(0.1793, 0.4873)
Oc (0.1676, 0.4724)
Od (0.1799, 0.4881)

Answers

The formulae that specify how much 8% solution in equation and how much 24% solution were utilized are x+ y=200 and x+3y=450.

What is an equation ?

A mathematical equation is a formula that uses the equals symbol (=) to link two expressions and represent their equivalence. A mathematical statement that demonstrates the equality of two mathematical expressions is an equation in algebra, in its most basic form. Consider the equation 3x + 5 = 14, where 3x + 5 and 14 are two expressions that are separated by the symbol "equal."

Let x and y be the volume of the 8% and 24% solutions, respectively, that were utilized.

The entire solution volume, as stated in the question, will be 200ml. The resulting equation is: x +y=200

Now that it has been stated that 8%, 18%, and 24% saline mixes would be employed as the solution, the following equation will be:

\(0.08x+ 0.24y=0.18*200\\8x/100+24/100=18/100*200\\8x+24y=3600\\\\8(x+3y)=3600\\ x+3y=450\\\)

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On solving the provided question, we can say that For the specified percentage, the 95% confidence interval is (0.864, 0.3580).

A confidence interval is defined.

A confidence interval in statistics expresses the probability that a population parameter would fall between a set of values for a specific percentage of the time. Analysts commonly utilize 95% or 99% confidence intervals for their predictions.

If total samples = E = 36, then

8 results were obtained.

Chance = p = 8/36 = 0.2222

Z value at 95% confidence level = 1.96

p = \(0.2222 + 1.96 ( \sqrt{ 0.2222() 1 - 0.2222) / 36 } ) = 0.3580\)

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Given the following parameters for a sampling distribution of sample proportions, calculate the sample proportion. Round your answer to two decimal places. p = 0.62, x = 68, n = 100

Answers

The sample proportion is 0.68 or 68% when rounded to two decimal places.

To calculate the sample proportion, you can use the formula:
Sample proportion (p) = x/n where x is the number of successes and n is the sample size. In this case, p = 0.62 (population proportion), x = 68, and n = 100.
Now, plug in the given values:
p = 68/100
p = 0.68

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Simplify the expression (2x^2+6x-7)-(9x^2-11)

Answers

2x^2 + 6x - 7 - 9x^2 + 11

(2x^2 - 9x^2) + (6x) + (-7 + 11)

-7x^2 + 6x + 4

Hope this helps!! :)

Answer:

=- 7x^2+6x+4

Step-by-step explanation:

Evaluate 7+ (-3x?) for x = 0.




Answers

Answer:

it's just 7

Step-by-step explanation:

because if x is 0 then -3 times 0 will be 0 and 7 + 0 is 7

Grace bought 3 soccer balls for $14 each and 2 pairs of goalie gloves for $9 each. Write an expression for the total cost of the supplies. Then find the total cost. (LABEL)

Answers

Answer:

3(14)+2(9) is the equation

$60 is the total cost

Tell me if im right :)

Answer:

T=60

Step-by-step explanation:

What expressions are equivalent to 8x+72

Answers

If you want it in distributive property it could be 4(2x+18)

A recipe calls for 3/4 of an onion. It makes enough for 4 people. Have much onion does each person get?

Answers

Answer:

3/16 of an onion

Step-by-step explanation:

3/4 onion divided by 4

3/4÷4

Copy dot lip

3/4 * 1/4

3 /16 of an onion

Answer:

\( \frac{3}{16} \)

Step-by-step explanation:

\( \frac{3}{4} \div \frac{4}{1} \\ \frac{3}{4} \times \frac{3}{4} \\ = \frac{3}{16} \)

hope this helps

brainliest appreciated

good luck! have a nice day!

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