A culture started with 4,000 bacteria. After 5 hours, it grew to 4,800 bacteria. Predict how many bacteria will be present after 15 Hours.
Round your answer to the nearest whole number

A Culture Started With 4,000 Bacteria. After 5 Hours, It Grew To 4,800 Bacteria. Predict How Many Bacteria

Answers

Answer 1
First we need to find k ( rate of growth)
The formula is
A=p e^kt
A future bacteria 4800
P current bacteria 4000
E constant
K rate of growth?
T time 5 hours
Plug in the formula
4800=4000 e^5k
Solve for k
4800/4000=e^5k
Take the log for both sides
Log (4800/4000)=5k×log (e)
5k=log (4800/4000)÷log (e)
K=(log(4,800÷4,000)÷log(e))÷5
k=0.03646

Now use the formula again to find how bacteria will be present after 15 Hours
A=p e^kt
A ?
P 4000
K 0.03646
E constant
T 15 hours
Plug in the formula
A=4,000×e^(0.03646×15)
A=6,911.55 round your answer to get 6912 bacteria will be present after 15 Hours

Hope it helps!
Answer 2

Answer:

6900 rounded answer -

Step-by-step explanation:

Plato users, correct.


Related Questions

Given 7x + 11y = N, what is the highest number N can be to produce an answer of No solution. (X,y) must be positive.

Answers

Since x and y must be positive, 7x and 11y are positive either. That means 7x + 11y > 0. Then we would obtain N > 0 because 7x + 11y = N. That also means N must be positive. So if we set N to be zero or negative, there would be no solution. Thus, to produce an answer of No solution, the highest number N could be is 0. 
Since x and y must be positive, 7x and 11y are positive either. That means 7x + 11y > 0. Then we would obtain N > 0 because 7x + 11y = N. That also means N must be positive. So if we set N to be zero or negative, there would be no solution. Thus, to produce an answer of No solution, the highest number N could be is 0.

PLEASE HELP! What is the first step you will use to solve this equation:

4x +2 = 7x - 13

Question 1 options:

Add 13 to both sides


Subtract 2 from both sides


Add 7x to both sides


Subtract 4x from both sides

Answers


Add 7x to both sides
4x + 2 = 7x - 13

adding 13 to either side or subtracting 2 from either side will be the same thing
So either of them will be the right answer

Solving Quadratic Equations (pic link)?

Answers

(x * x) /2 = 27
x^2 = 54
x = sq root(54)
x = 7.34847
x = 7.3


As Mercury revolves around the sun, it travels at a rate of approximately 30 miles per second. Convert this rate to miles per minute. At this rate, how many miles will Mercury travel in 4 minutes?

Answers

30 miles per second times 60 seconds = 1,800 miles per minute.
To find out for 4 minutes, now we multiply 1,800 miles times 4 which = 7,200 miles.
In 4 minutes, Mercury will travel 7,200 miles.

The number of miles that Mercury travels in 4 minutes will be 7,200 miles.

What is the rate?

The rate is the ratio of the amount of something to the unit. For example - If the speed of the car is 20 km/h it means the car travels 20 km in one hour.

Unit modification is the process of converting the measurement of a given amount between various units, often by multiplicative constants that alter the value of the calculated quantity without altering its impacts.

As Mercury revolves around the sun, it travels at a rate of approximately 30 miles per second.

Convert the rate into miles per minute. Then we have

Rate = 30 x 60

Rate = 1,800 miles per minute

At this rate, the number of miles that Mercury travels in 4 minutes will be given as,

D = 1,800 x 4

D = 7,200 miles

The number of miles that Mercury travels in 4 minutes will be 7,200 miles.

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pilar wants to save $100. So far, she has saved $63. Find the length of each side of the square

Answers

lol. This is a joke right?

At a baseball stadium the price for popcorn is $14.70 for 5 bags. If you wanted to buy 4 bags of popcorn, how much would it cost?

Answers

$11.77 ; Divide $14.70 by 5 to get the gist of each individual bag. Then multiply that number by 4.

What do you do the inequality symbol when you multiply or divide by a negative number?

Answers

u pretty much solve inequalities much like u solve equations except for one important rule. That rule deals with inequalities. If u have to divide or multiply by a negative number, u have to change the inequality sign. if it is greater then (>) and u have to divide/multiply by a negative number, then u change the inequality sign to less then (<)...and vice-versa

A rectangle is twice as long as it is wide. if its length is increase by 4 cm and its width is decreased by 3 cm, the new rectangle formed has an area of 100 cm2 . find the dimensions of the original rectangle.

Answers

Now the width is w.
It's twice as long as wide, so now the length is 2w.

If the length is increased by 4 cm, the length will be 2w + 4.
The width is decreased by 3 cm, so the width will be w - 3.

The are of the new rectangle is 100 cm^2.

area = length * width

area = (2w + 4)(w - 3)

The area of the new rectangle is 100, so we get

(2w + 4)((w - 3) = 100

2w^2 - 6w + 4w - 12 = 100

2w^2 - 2w - 112 = 0

w^2 - w - 56 = 0

(w - 8)(w + 7) = 0

w - 8 = 0   or   w + 7 = 0

w = 8   or   w = -7

A width cannot be negative, so discard w = -7.

w = 8

The width is 8 cm.
The length is twice the width, so the length is 16 cm.

A sea turtle swims at a speed of 27 kilometers per hour. A girl swims 14 decimeters per second.

1 m = 10 dm

1000 m = 1 km

How much faster does the sea turtle swim than the girl in meters per minute?



Enter your answer in the box.

____m/min

Answers

366 m/min First, convert the turtles speed to meters per minute. 27 km/h * 1000 m/km = 27000 m/h / 60 min/h = 450 m/min Now convert the girls speed to meters per minute. 14 dm/s / 10 dm/m * 60 s/min = 84 m/min Now subtract the girl's speed from the turtle's speed. 450 m/min = 84 m/min = 366 m/min

~~~~~~~~~~The answer is 366 m/min~~~~~~~~~~~~~~~~~~ First, convert the turtles speed to meters per minute. 27 km/h * 1000 m/km = 27000 m/h / 60 min/h = 450 m/min Now convert the girls speed to meters per minute. 14 dm/s / 10 dm/m * 60 s/min = 84 m/min Now subtract the girl's speed from the turtle's speed. 450 m/min = 84 m/min = 366 m/min



You purchase a pair of jeans for $24.99 and a t-shirt for $12.49. Assume sales tax is 7.5%



What is your subtotal? $

What is the tax? $

What is your total? $

Answers

The subtotal is $37.48
The tax is $4.99
The total is $42.47
Hope this helps!!
Subtotal? $37.48
Tax?$2.81
Total?$40.30

a regular polygon must have ___ sides if each interior angle measure is four times the measure of each exterior angle

Answers

Int Angle + Ext Angle = 180
4Ext + Ext = 180
Ext = 36 degrees
-----
360/36 = 10 sides

The sum of the interior angles of the polygon is 1440° and the number of sides of the polygon is 10 sides

What is the sum of the interior angles of a polygon?

The sum of the interior angles of a polygon is given by the formula

Sum of Interior angles of a polygon with n sides is

nθ = 180 ( n - 2 )

where n is the number of sides

θ = angle in degrees

Given data ,

Let the sum of the interior angles of the polygon be S

Now , the number of sides = n

The sum of the exterior angles of a polygon = 360°

And , each interior angle measure is four times the measure of each exterior angle

Substituting the values in the equation , we get

180 ( n - 2 ) = 4 ( 360 )

On simplifying the equation , we get

180n - 360 = 1440

Adding 360 on both sides of the equation , we get

180n = 1800

Divide by 180 on both sides of the equation , we get

n = 10 sides

Hence , the number of sides of the polygon is 10 and it is a decagon

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P(x) = x2 – 1 and q(x)=5(x-1), which expression is equivalent to (p – q)(x)?

Answers

p(x) - q(x) = x²-1 -5(x-1)
= x²-1-5x+5
=x²-5x+4

Answer:  The required expression is [tex]x^2-5x+4.[/tex]

Step-by-step explanation:  We are given that

[tex]p(x)=x^2-1,\\\\q(x)=5(x-1).[/tex]

We are to find the expression that is equivalent to (p-q)(x).

We know that for any two functions f(x) and g(x), we have

[tex](f-g)(x)=f(x)-g(x).[/tex]

Therefore we get

[tex](p-q)(x)\\\\=p(x)-q(x)\\\\=(x^2-1)-(5(x-1))\\\\=x^2-1-5x+5\\\\=x^2-5x+4.[/tex]

Thus, the required expression is [tex]x^2-5x+4.[/tex]

Any large random sample from a group of people will be representative of the entire group.
a. True
b. False

Answers

This statement is false.

Hope this helped! :)

Tony is putting 42 oranges into 4 boxes. Each box holds 12 oranges.

How many more oranges are needed to fill all the boxes?

Answers

A box holds 12 oranges, in which there are 4 boxes

12 x 4 = 48

Tony has 42 oranges. 48 - 42 = 6

Tony needs 6 more oranges to fill all the boxes

hope this helps
42/12 is 3.5 boxes

he has 4 boxes so there is no need for any more boxes

Two trucks leave a warehouse at the same time. one travels due north at an average speed of 48 miles per hour, and the other travels due south at an average speed of 64 miles per hour. after how many hours will the two trucks be 728 miles apart?

Answers

Final answer:

When two objects are moving in opposite directions, their relative speed is the sum of their speeds. In this scenario, the trucks will be 728 miles apart after 6.5 hours of travel.

Explanation:

The problem here is essentially an application of the concept of relative speed. The two trucks are traveling in opposite directions, so you add their speeds together to get the relative speed at which they are moving apart. That results in a combined speed of 48 mph (north) + 64 mph (south) = 112 mph. Now, to find out when they will be 728 miles apart, you divide the total distance by the combined speed:

728 miles ÷ 112 mph = 6.5 hours.

So, both trucks will be 728 miles apart after 6.5 hours.

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A car travels 0.75 every minute. Explain how could you use proportional reasoning to find how far the car travels in one hour

Answers

If you know that the car travels 0.75 per minute and that there are 60 minutes are in a hour, you could multiply 0.75 with 60, which gives you an answer of 45.

Answer:

Sample Response: Identify the unit rate as 0.75 miles per 1 minute. Since there are 60 minutes in an hour, multiply 0.75 time 60 to find how far the car travels in one hour.

Step-by-step explanation:

What was the one item that was left out of the repeal.?

Answers

i have no idea how to answer this maybe post the repeal

Will a polynomial times a polynomial always equal a polynomial?

Answers

correct. you are a star today your awesome

Answer:

yes, it will always be a polynomial but depending on how many terms it has, the answer may change

Step-by-step explanat

The length of a rectangle is 6 cm longer than its width. if the perimeter of the rectangle is 36 cm , find its area.

Answers

the area of it would = out to be 6

Is 0.54 a rational number? Why or why not?

Answers

It is a rational number because it ends which is a characteristic of a rational number. If you were to convert it to a fraction, the simplest form would be 27/50.
 
0.54 is a rational number because in can be written as 54/100 and both 54 and 100 are integers

The number 23 is what percent of 66

Answers

15.18



66 divided by 100 =.66

.66 x 23 =15.18
23 of 66 is 34.8484%

Could someone please help me. Thanks!!! 12 points!

Answers

The horizontal beams are what I like to think of as "rail road tracks". The metal portion of the tracks anyway. Notice how angle 2 and angle 8 are inside the tracks, so we consider them "interior angles"

Furthermore, they are on opposite or alternate sides of the transversal line. The transversal line is the non-parallel line that cuts through the "rail road tracks".

Put those two facts together and we get "alternate interior angles" as our final answer

Which correctly describes how the graph of the inequality 6y-3x>9 is shaded

Answers

We already know that it will be a dashed line because there is no equal sign in the problem.

6y - 3x > 9
6y > 3x + 9
y > 3/6x + 9/6
y > 1/2x + 3/2

And greater then means shaded above the line.

I hope this helped! :)
Please mark as brainliest!

Answer: above the dash line!

Which property of equality would be used to isolate the variable b in this equation? (3/4) b= 12

Answers

C. multiplication property of equality

Which object models a line ?
A. a fly
B. a wall
C. a meter stick
D. a television

Answers

The object is a meter stick that models a line.

What is a line?

A line is an object in geometry that is indefinitely long and has neither breadth nor depth nor curvature.

Since lines can exist in two, three, or higher dimensional environments, they are one-dimensional things.

In daily language, a line segment with two points designating its endpoints is also referred to as a "line."

From the given choices:

A meter stick models a line.

Therefore, the object is a meter stick.

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Please help with this question thank you!

Answers

2. Bertha Dr.||Charles St
3. Adam Ct.|Edward Rd.
4.b||d

Find the least common multiple of x 3 - x 2 + x - 1 and x 2 - 1. write the answer in factored form.
a. (x + 1) 2(x - 1)
b. (x + 1)(x - 1)(x 2 + 1)
c. (x 3 - x 2 + x - 1)(x 2 - 1)
d. (x + 1)(x - 1)(x 2 - 1)

Answers

Let
f(x) = x³ - x² + x - 1
g(x) = x² - 1

By the remainder theorem, f(1) = 1 -1 + 1 - 1 = 0
Therefore (x-1) is a factor.
Perform synthetic division.

1 | 1  -1   1  -1
         1  0   1
   --------------
    1   0  1   0

Therefore,
f(x) = (x-1)(x²+1)

Also,
g(x) = (x+1)(x-1)

Answer: b.
The least common multiple for f(x) and g(x) is (x + 1)(x - 1)(x² + 1).

The correct answer is d. [tex](x + 1)(x - 1)(x^2 - 1)[/tex].

To find the least common multiple (LCM) of the two polynomials[tex]\(x^3 - x^2 + x - 1\) and \(x^2 - 1\)[/tex], we need to factor each polynomial and then find the LCM of the factors.

First, let's factor [tex]\(x^3 - x^2 + x - 1\)[/tex]:

[tex]\(x^3 - x^2 + x - 1 = x^2(x - 1) + (x - 1) = (x^2 + 1)(x - 1)\)[/tex].

Now, let's factor [tex]\(x^2 - 1\)[/tex]:

[tex]\(x^2 - 1 = (x + 1)(x - 1)\)[/tex].

The LCM of two polynomials is the product of the highest powers of all the factors that appear in either polynomial. Here, we have the factors [tex]\(x - 1\), \(x + 1\), and \(x^2 + 1\)[/tex] from the first polynomial, and the factors [tex]\(x - 1\) and \(x + 1\)[/tex] from the second polynomial.

Since [tex]\(x^2 + 1\)[/tex] is already the highest power of [tex]\(x^2 + 1\) , \(x - 1\) and \(x + 1\)[/tex] are the highest powers of [tex]\(x - 1\) and \(x + 1\)[/tex] respectively, the LCM is simply the product of all these factors:

[tex]\((x + 1)(x - 1)(x^2 + 1)\)[/tex].

However, we notice that [tex]\(x^2 - 1\)[/tex] is actually equal to [tex]\((x + 1)(x - 1)\)[/tex], and since [tex]\(x^2 + 1\)[/tex] is not a factor of [tex]\(x^2 - 1\)[/tex], we do not include it in the LCM. Therefore, the LCM is just [tex]\((x + 1)(x - 1)\)[/tex].

But we must also consider the polynomial [tex]\(x^3 - x^2 + x - 1\)[/tex], which can be rewritten as [tex]\((x^2 + 1)(x - 1)\)[/tex]. Since [tex]\(x^2 + 1\)[/tex] is not a factor of [tex]\(x^2 - 1\)[/tex], it must be included in the LCM to account for the additional factor in the first polynomial.

Thus, the LCM of [tex]\(x^3 - x^2 + x - 1\) and \(x^2 - 1\)[/tex] is [tex]\((x + 1)(x - 1)(x^2 - 1)\)[/tex], which corresponds to option d. This is because we take the highest powers of the common factors [tex]\((x + 1)\) and \((x - 1)\)[/tex], and include the additional factor from the first polynomial, which is [tex]\(x^2 - 1\)[/tex] since [tex]\(x^2 + 1\)[/tex] is not a factor of[tex](x^2 - 1\))[/tex].

Therefore, the final answer is [tex]\(\boxed{(x + 1)(x - 1)(x^2 - 1)}\)[/tex].

H=62.4Ns/33,000 solve for N
please help

Answers

1. convert decimal to fraction
2. simplify fraction
3. cross multiply
4. divide by 13
5. Solve
n=6875/13 h

Answer:

[tex]N=\frac{33,000H}{62.4s}[/tex]

Step-by-step explanation:

We have been given an equation [tex]H=\frac{62.4Ns}{33,000}[/tex]. We are asked to solve our given equation for N.

Multiply both sides by 33,000:

[tex]H*33,000=\frac{62.4Ns}{33,000}*33,000[/tex]

[tex]33,000H=62.4Ns[/tex]

Switch sides:

[tex]62.4Ns=33,000H[/tex]

Divide both sides by [tex]62.4s[/tex]:

[tex]\frac{62.4Ns}{62.4s}=\frac{33,000H}{62.4s}[/tex]

[tex]N=\frac{33,000H}{62.4s}[/tex]

Therefore, the value of N is [tex]\frac{33,000H}{62.4s}[/tex].

Is y=4x-1 and 12x=3y+7 parallel, perpendicular, or neither

Answers

first, you simplify 12x=3y+7. Subrtact 7 from both side, get 12x-7=3y. Divide 3 from both sides, get y=4x-(7/3). Your 2 equations are y=4x-1 and y=4x-7/3. The 2 lines are parallel, since they have the same slope but different b's.

Answer:

Neither is the answer.

Step-by-step explanation:

If a line y = m₁x + c₁ and y = m₂x + c₂ are perpendicular to each other then m₁ × m₂ = -1

If both the lines are parallel to each other then m₁ = m₂

Now two lines have been given as

y = 4x - 1 ----------(1)

12x = 3y + 7

3y = -12x + 7

y = -4x + [tex]\frac{7}{3}[/tex]------(2)

Now from equation (1) and equation (2),

m₁ = 4 and m₂ = -4

Since m₁ ≠ m₂

Therefore, these lines are not parallel

m₁ × m₂ = 4 × (-4) = -16

Therefore, both the lines are neither parallel nor perpendicular.

Samantha bought a shirt for $14.98. She gave the cashier a $20 bill. Which operation(s) finds the amount of change Samantha received?

Answers

subtraction :)

20 - 14.98 = 6.02

subtract the cost of the shirt from the amount she gave the cashier

20.00 - 14.98 = 5.02

 using subtraction she would get $5.02 back in change

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