In a lab experiment, 100 bacteria are placed in a petri dish. The conditions are such
that the number of bacteria is able to double every 13 hours. How long would it be, to
the nearest tenth of an hour, until there are 156 bacteria present?

Answers

Answer 1

Answer: 8.34 hr

Step-by-step explanation:

Given

Initially, 100 bacteria are placed in a Petri dish

bacteria doubles in every 13 hours

So, a function that defines this relation is given as

[tex]\Rightarrow B=B_o(2)^\frac{t}{13}[/tex]

where, [tex]B=\text{No of bacteria at any time}[/tex]

[tex]B_o=\text{Intial bacterias}\\t=\text{time in hrs}[/tex]

for [tex]B=156[/tex]

[tex]\Rightarrow 156=100\times 2^{\frac{t}{13}}\\\\\Rightarrow 1.56=2^{\frac{t}{13}}\\\\\Rightarrow t=13\times \dfrac{\ln (1.56)}{\ln (2)}\\\\\Rightarrow t=13\times0.641=8.34\ hr[/tex]

Answer 2

Answer: 8.3

Step-by-step explanation:


Related Questions

Use the number line to answer the questions that follow

Answers

Answer:

A. make a point on the line to the right 2 units from 0

B. the opposite of 2 isn't located at the same place as point P on the number line because the opposite of 2 is -2 and the point P is the opposite of negative 2 which would be positive 2. So the two points are not in the same place because they have different signs.

Step-by-step explanation:

hope this helps

I know the wording is a bit complicated lol <3

13,14,15- please helppp

Answers

Answer:

Must understand distance and slope formula first:

slope y_2-y_1/x_2-x_1

distance d=√((x_2-x_1)²+(y_2-y_1)²)

(Just search up the formulas if this isn't clear)

Step-by-step explanation:

For #13 take two points and put them in the distance formula remember (#,#) the first # is 'x' the second # is the 'y' in a point.

then you could simply type all that in a calculator and a single number should pop up indicating one of the lines (doesn't matter the #) then do the same for the second points (cuz you used two already you have two left) If the number is same as the first two points it's a pallelagram. (I tested it out got 7.07...)

For the slope you're doing something similar to the distance formula, you're filling out two sets of points into the slope formula if they come out the same # it's parallel.

Solve the formula for c
cd + z = m - cb​

Answers

cd + z = m - cb
cb + z - m = cb
z - m = cb + cb
z - m = c(d + b)

c = (m - z)/(d + b)

What is one thing that you found interesting about future value and present value for compound interest? 100 words ^

Answers

Answer:

Compound interest is that which, once generated, is added to the capital, in order to expand the calculation base on which, in turn, new interests will be generated. Thus, in short, if the interest is, for example, 5 percent, said interest will be added to the initial capital, with which that 5% generated will be increasing, since it will be calculated on an increasingly large basis.

Compound interest is very important for financial investments, as it maximizes the results of said investments, even more so when compared to simple interest, in which the interest generated is not added to the initial capital.

What is 1/2+1/2+1/2=

Answers

Answer:

the answer would be 2 and 1/2

Answer:

1.5

Step-by-step explanation:

There are 420 students at Virginia Middle School. The ratio of girls to boys is 4 to 3. HELPPPPPPPP

Answers

Answer:

60 more girls are there than boys at Virginia Middle School.

Slove for the value of x to the nearest whole number?

Answers

Answer:

Hello good afternoon

Step-by-step explanation:

you have to put this link

a submarine is located at sea level. if the submarine dives at a rate of 5 meters per minute for 15 minutes. what will be the position of the submarine be with respect to sea level ​

Answers

Answer:

75 meters below

Step-by-step explanation:

5 x 15= 75

Algebra 2

Solve each equation to the nearest thousand

Help pls

Answers

I don’t understand your question, can you give more details please

A) Jerry wants to open a bank account with his money. He will deposit $60.75
per month. If m represents the number of months, write an algebraic expression to
represent the total amount of money he will deposit

Answers

Answer:

$60.75×m

Step-by-step explanation:

'5'5"5"5""55

A triangle with one angle larger than 90° is called

Answers

the correct answer is obtuse triangle

Answer:

An obtuse-angled triangle is a triangle in which one of the interior angles measures more than 90° degrees.

Step-by-step explanation:

please please please please please help me
i will give brainliest

Answers

2x^2 - 4 = 68
add 4 to both sides
2x^2 = 72
divide both sides by 2
x^2 = 36
find the square root of each sides
x = 6, -6

ANSWER: the positive value of x is 6

Can someone please help me on this?

Answers

Answer:

I cant sorry

Step-by-step explanation:

Which expression is equivalent to the expression 6h + 2?
(2 + 4h) + 2
(2 + 4h) + h
(1 + 5h) + 2
(2 + 5h) + h

Answers

I think the second answer is correct

Answer:

D

Step-by-step explanation:

A chef divided 24.7 grams of salt into two equal piles. How much salt is in each pile? Enter your answer in the box. g​

Answers

Answer: 12.35

Step-by-step explanation: Since we know that there is a total of 24.7 grams in both piles, we can find how much salt is in one by dividing 24.7 by 2.

The amount of salt in each pile will be the half amount of 24.7 grams thus 12.35 grams will be in each pile.

What is the arithmetic operator?

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Division = divide any two numbers or variables called division.

For example 4/8

As per the given,

Amount of salt available = 24.7 grams.

It needed to divide into two piles.

In one piles = 24.7/2 = 12.35 grams

Hence "The amount of salt in each pile will be the half amount of 24.7 grams thus 12.35 grams will be in each pile".

To learn more about the arithmetic operators,

brainly.com/question/25834626

#SPJ2

PLEASE HELP ME.............

Answers

Answer:

[tex]g(x)=3x^2[/tex]

find the area of the figure below, composed of a rectangle with two semicircles removed. Round to the nearest tenths place.

Answers

Answer:

Area of figure = 11.43 unit² (Approx.)

Step-by-step explanation:

Given:

Length = 6 unit

Width = 4 unit

Radius = 4/2 = 2 unit

Find:

Area of figure

Computation:

Area of figure = Area of rectangle - 2[Area of hemisphere]

Area of figure = [l x b] - 2[(πr²)/2]

Area of figure = [6 x 4] - 2[(3.14 x 2²)/2]

Area of figure = 24 - 12.57

Area of figure = 11.43 unit² (Approx.)


The average car engine weighs 158 kg.
The ratio of the mass of the engine to the mass of the car is 1: 11.
What is the mass of the car?

Answers

158x11=1738:)))))))))))

Answer:

the car weighs 1738 kgs

Step-by-step explanation:

let the mass of car be x.

[tex] \frac{158}{x } = \frac{1}{11 } \\ \\ x = 158 \times 11 \\ \\ x \: = 1738kg[/tex]

therefore, mass of car is 1738kgs

Hey guys welcome to my pronounce word to makee u better so if u wanna say d.ick u have to use a L for i but a lowercase L and it loos like DlCK

Answers

Answer:

lol

Step-by-step explanation:

Answer:

uhhhh ok

thanks i guess

( u can say ars instead of u know)

Please helpppp!!!
Find the value of x.

Answers

Answer:

6.18

Step-by-step explanation:

180=75-17x

17x=180-75

17x=105

x=6.18

hope it helps

25 POINTS + BRAINLIEST

Answers

Answer:

It should be A) 54

Step-by-step explanation:

32 + 14 + 8 = 54

La media es única ? Cierto o falso

Answers

Answer:

cierto

Step-by-step explanation:

porque son diferentes cosas?





Sim, está cierto...

Movie Theaters There are two movie theaters in a town. A student wants to compare the amount of
money each theater makes over a period of days. The following box plots show the data for the
amount of money each theater makes over a period of days. Compare the median of each box plot.
Click here to see the box plot for movie theater 1.
Click here to see the box plot for movie theater 2.
Vhich of the following is the best description of the medians?
A. The median for Movie Theater 1 is greater.
B. The median for Movie Theater 2 is greater.
C. The medians are about the same.

Answers

The answer is b :)

The medians are about the same.

Option C is the correct answer.

What is a median?

It is the middle value of the given set of numbers after arranging the given set of numbers in order.

We have,

Movie theater 1.

From the box plot given,

The median is 995.

Movie theater 2.

From the box plot given,

The median is 995.

Thus,

The median in both the box plot is the same.

Learn more about the median here:

https://brainly.com/question/28060453

#SPJ2

What is 8 1/3 as a fraction greater than 1

Answers

Answer:

11/8

Step-by-step explanation:

thats just the answer

a student wants to measure the height of a tree. from a point on the ground 10 feet away from the base of the tree, the angle of elevation to the top of the tree is 65angle. what is the height of the tree to the nearest tenth of a foot?

Answers

Answer:

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

Tan(65) = Opp / 10

10* Tan(65) = Opp

21.445 = Opp

so the height of the tree is approx  21.4 feet ( to the nearest 10th )

Which two prisms have the same height

Answers

Answer:

The height of prism A is 4, the height of prism B is 5, the height of prism C is 4, and the height or prism D is 2. Since 4=4, prisms A and C have the same height.

Hope this helped! If it did, please give me brainliest! It would help a lot! Thanks! :D

Plz help me !!!! I’m not sure if it’s 20 !

Answers

Answer:

D) 20º

Step-by-step explanation:

if one angle is 70º, and the other is 90º, that means that the first two angles equal 160º. since all three interior angles of a triangle have to add up to 180º, the third angle must be 20º.

Hey!! The answer is 20!

:)

Help please is for now

Answers

Answer:

x intercept (-3,0)

y intercepy (0,-6/5)

Step-by-step explanation:

uh i used a calculator but please lmk if this is correct

Solve the equation using the method of completing the square. A. B. C. D.

Answers

Where is the equation?

Answer:

A

Step-by-step explanation:

Why can you double the volume of a right prism by doubling either the height or the area of the base?

Answers

Answer: You can double the volume of te right prism by doubling either the height of the area of the base because if you do that it will either get double the height, therefore being double the size, or double the width, therefore being double the size as well. So the volume will also be double.

Step-by-step explanation:

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