A 0.25 mL sample of water drawn from a 5 liter flask contains 1.25 x 10^8 bacteria. Give the approximate number of bacteria in the flask, expressing your answer in scientific notation.

(Scientific Notation: find a real number a between 1 and 10, and an integer n, such that x = a x 10^n.)

Answers

Answer 1

Answer:

The number of bacteria in 0.25 mL is 6.25 x 10^3.

Step-by-step explanation:

5 liter flask contains 1.25 x 10^8 bacteria.

So, 1liter flask contains = [tex]\frac{1.25 \times 10^8}{5} =2.5\times 10^7[/tex]

Now

0.25 mL contains = [tex]2.5\times 10^7 \times0.25\times 10^{-3} = 6.25\times 10^3[/tex]


Related Questions

please help! I cant figure this out!

Answers

I think the answer is 104.864 cm^2, hope this helps- brainliest would awesome thanks

finding the answer (solution) for z!

Answers

Answer:

z = 83/(6-c-t)

Step-by-step explanation:

-cz +6z = tz +83

Subtract tz from each side

-cz +6z -tz = 83

Factor out z

z(6-c-t) = 83

Divide by (6-c-t)

z(6-c-t) /(6-c-t) = 83/(6-c-t)

z = 83/(6-c-t)

-2, 1, 7, n, 43, ...
What is n?

Answers

Answer:

n=19

Step-by-step explanation:

-2+3=1

1+6=7

7+12=19

19+24=43

you are constantly doubling second number, starting with 3

Answer:

Step-by-step explanation:

The simple interest on certain principal is 1/5 of the amount in 5 years, find the rate of interest.
a. 5%
b. 80%
c 6 2/3
d 10%​

Answers

the answer to is percent is b

The rate is 4% per year.

It is required to find the rate of interest.

What is simple interest ?

Simple Interest (S.I.) is the method of calculating the interest amount for a particular principal amount of money at some rate of interest.

Given that:

Let, principal is P,

so, interest is P/5 in 5 yrs.

As from the formula of simple interest,

So, P/5 = P× R ×5/ 100 (R = rate)Or, R = 4%

So, rate is 4% per year.

Learn more about simple interest here:

https://brainly.com/question/24181542

#SPJ2

The missing option is e. 4%

What is the height of the parallelogram?
+
A=56 m2
8 m

Answers

Answer:

7 m

Step-by-step explanation:

A = base x height

56 = 8 x h

56/8 = h

h = 7

Two data sets are represented by the graphs below.


A.)Smaller range

B.) Lager median

C.)Larger mean

D.)Smaller standard deviation ​

Answers

It’s larger median one ages the graphs looks bigger

How many fives makes 6 tens

Answers

Answer:

12.

Step-by-step explanation:

6x10 = 60.

60 divided by 12 =5.

Answer:

12

Step-by-step explanation:

5x = 60

x  = 12

The table shows information about some children.

Age 11 Age 12 Total
Girls 3
a
b
Boys
c
5 8
Total
d
13
e

A pupil is selected at random.
What is the probability of selecting a student aged 12?
Give your answer in its simplest form.

Answers

Answer:

[tex]P(Age\ 12) = \frac{2}{3}[/tex]

Step-by-step explanation:

Given

        Age 11    Age 12    Total  

Girls   3             5              8

Boys   1             3             4

Required

[tex]P(Age\ 12)[/tex]

The number of aged 12 children is:

[tex]Age\ 12 = 5 + 3[/tex]

[tex]Age\ 12 = 8[/tex]

The total number of children is:

[tex]Total=8+4[/tex]

[tex]Total = 12[/tex]

So, we have:

[tex]P(Age\ 12) = \frac{Age\ 12}{Total}[/tex]

[tex]P(Age\ 12) = \frac{8}{12}[/tex]

Simplify

[tex]P(Age\ 12) = \frac{2}{3}[/tex]

Can someone help me with this math homework please!

Answers

Answer:

x = 12.5

Step-by-step explanation:

Explanation in progress ;-)

help please!! first answer gets marked brainliest!

Answers

Answer:

Answer 30

Step-by-step explanation:

if you need to solve or see step- by step explanation here's a link https://mathsolver.microsoft.com/en/solve-problem/%60sqrt%7B%2050%20%20%7D%20%20%20%60times%20%203%20%60sqrt%7B%202%20%20%7D

Anita and beth have the same number of trading cards. Anita gives 18 of her cards to beth. As a result, beth has twice as many card as anita does. How many cards did anita have before she gave some away.

Answers

Answer:

18

Step-by-step explanation:

if Anita and Beth had the same amount of trading cards this means they each had 18 cards so when Anita gave Beth her cards the number of cards Beth had have been diul ed meaning Beth now has 36 cards while Anita has non

Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 3 more than 3 times the number of marbles Mark has, how many does each boy have to sell if the total number of marbles is 67

Answers

Mark has 16 marbles, Don has 51 marbles
Hope this helps- brainliest would be great thanks


a) Work out the value of 10

Answers

Step-by-step explanation:

√10

= 1.414×2.236

= ±3.162

hope it is helpful to you ☺️

¿Cuántos números distintos pueden formarse con los dígitos 4, 5, 6 y 7 sin repetir ninguno de ellos?

Answers

Answer:

24.

Step-by-step explanation:

Para determinar cuántos números distintos pueden formarse con los dígitos 4, 5, 6 y 7 sin repetir ninguno de ellos se debe realizar el siguiente cálculo:

4, 5, 6 y 7 = 4 números

4 x 3 x 2 x 1 = X

12 x 2 = X

24 = X

Por lo tanto, con los dígitos 4, 5, 6 y 7 pueden formarse 24 números.

What are the solutions to this equation? (p+6)2=25 Enter your answers in the boxes. The solutions are p = or p = .

Answers

Answer:

p= -1 or -11

Step-by-step explanation:

if you mean (p+ 6)² = 25;

then we have that:

p + 6 = √ 25: gotten by squaring both sides of the equal sign

which makes

p + 6 = ±5

P= -6 ±5

therefore;

p = -6 + 5 or p = -6 -5

m(x) = x+5/ x-1 and n(x) = x-3, which function has the same domain as (m•n) (x)?

Answers

it’s uöroebd dirksen wvsJsb

Evaluate the function. f(x)=3x^2 −4x Find f(−1)

Answers

Answer:

7

Step-by-step explanation:

evaluate the function means substitute x=-1 and calculate

f(x) = 3x²-4x

f(-1) =f(x=-1) = 3(-1)²-4(-1) =3+4 =7, because (-1)²=1 and -4(-1) =4

URGENT!!SOMEONE HELP QUICK PLEASE

Answers

Answer:  20%

Explanation:

The "given the customer ordered a cold drink" means we only focus on the bottom row of values. There are B = 8+12+5 = 25 people who ordered a cold drink. Of that total, A = 5 people ordered a cold large drink.

The probability we want is A/B = 5/25 = 1/5 = 0.20 = 20%

Find the measures of angles x,y and z in the figure. Show your work!!
WILL GIVE BRAINLIEST!!!

Answers

Answer:

x = 106°

y = 106°

z = 106°

Step-by-step explanation:

Find x:

Angle on straight line = 180°

[tex]74+x=180[/tex]

[tex]x=180-74[/tex]

x = 106°

Find y:

Angle y and x are corresponding angle which means x and y will be same

y = 106°

Find z:

Angle y and z are equal because, opposite angles are always equal.

z = 106°

hope this helps......

Answer:

x = 106°

y = 106°

z = 106°

Step-by-step explanation:

Can someone please help me by putting me where each one goes? !!

Answers

Answer:

5(x-2) = 5x -7

- no solution

-3(x-4) = 3x + 12

- infinitely many solution

4(x+1) = 3x + 4

- Only one solution

-2(x-3) = 2x -6

- Only one solution

6(x+5) = 6x + 11

- no solution

Need help ASAP I will mark brainliest

Answers

Answer:

see image

Step-by-step explanation:

3/4 ploted on a number line

Answers

Answer:

3/4 = 0.75

- 1 - 2 - 3 - 4

3/4 so its 321 colored

Step-by-step explanation:

Answer: 3/4=0.25


Hope this helped, have a wonderful day !

What is the sum of the 15th square number and the 5th cube number?

Answers

The sum of the 15th square number and the 5th cube number is 350.

The 15th square number will be:

15² = 15 × 15

= 225

The 5th cube number will be:

5³ = 5 × 5 × 5

= 125

The sum of the numbers will be:

225 + 125

= 350

Therefore, we get that, the sum of the 15th square number and the 5th cube number is 350.

Learn more about sum here:

https://brainly.com/question/17695139

#SPJ1

HELP ASAP BRAINLIST AND 10POIMTS AND 5 STAR AND A THANKS BUT IF CORRECT

Answers

Answer:

V = 20 cm^3

Step-by-step explanation:

The volume of a prism is

V = l*w*h

V = 6*5*2/3

V = 20 cm^3

Step-by-step explanation:

hope it helps you.........

Find the intersection point between the lines of equations:

x+y-2=0 and 3x-y+4=0 ​

Answers

Answer:

(-0.5,2.5)

Step-by-step explanation:

The given equations are ,

[tex]\implies x + y - 2 = 0 [/tex]

[tex]\implies 3x - y +4 = 0 [/tex]

The point of intersection will be the solution of the given system of equations. Adding both , y will get cancelled . So that ,

[tex]\implies 4x +2 = 0 [/tex]

Now solve for x , we have ,

[tex]\implies 4x = -2 \\\\\implies x =\dfrac{-2}{4}\\\\\implies x = -0.5 [/tex]

Now put this value in any equation and solve out for y , we have ,

[tex]\implies -0.5 + y - 2 = 0 \\\\\implies y = 2.5 [/tex]

Therefore , the point of intersection will be ,

[tex]\implies\underline{\underline{ Point = (-0.5,2.5 ) }}[/tex]

What is the domain of the function on the graph?

•all real numbers
•all real numbers greater than or equal to -2
•all real numbers greater than or equal to -5
•all real numbers greater than or equal to 0

Answers

Answer:

all real numbers

Step-by-step explanation:

got it right

Answer:

A

Step-by-step explanation:

it is all real numbers

brainiest please

IM TIMED HALP!!!
Relationship A and Relationship B show the change in the temperature for a pot of water on the stove. Relationship B has a greater rate than Relationship A.

This table represents Relationship A.

Time (min) 2 3 7 9
Temperature (°C) 61.3 64.9 79.3 86.5
What table could represent Relationship B?


Time (min) 2 3 7 9
Temperature (°C) 61.0 64.6 79.0 86.2

Time (min) 2 3 7 9
Temperature (°C) 60.6 64.3 79.1 86.5

Time (min) 2 3 7 9
Temperature (°C) 61.0 64.4 78.0 84.8

Time (min) 2 3 7 9
Temperature (°C) 61.8 65.3 79.3 86.3

Answers

Answer:

The table representing Relationship B is option 2

[tex]\begin{array}{ccc}Time \ (min)&&Temperature \ (^{\circ}C)\\2&&60.6\\3&&64.3\\7&&79.1\\9&&86.5\end{array}[/tex]

Step-by-step explanation:

The relationship shown by Relationship A and Relationship B = The change in the temperature for a pot of water om the stove

The rate of Relationship B > The  rate of Relationship A

The table for relationship A is given as follows';

[tex]\begin{array}{ccc}Time \ (min)&&Temperature \ (^{\circ}C)\\2&&61.3\\3&&64.9\\7&&79.3\\9&&86.5\end{array}[/tex]

The time in minutes are the x-values, while the temperature in °C Ere the y-values

The rate for Relationship A, [tex]m_A[/tex] = (86.5 - 61.3)/(9 - 2) = 3.6

Therefore, the rate for Relationship B > 3.6

By checking each option, we note that in option 2, the maximum value for the y-value is the same as for Relationship A, which is 86.5°C, while the minimum value for the time, t, is lesser than that for Relationship A, (60.6 minutes < 61.3 minutes) therefore, we get;

The rate for option 2 = (86.5 - 60.6)/(9 - 2) = 3.7

Therefore, the table that represents the Relationship B is the table for option 2

[tex]\begin{array}{ccc}Time \ (min)&&Temperature \ (^{\circ}C)\\2&&60.6\\3&&64.3\\7&&79.1\\9&&86.5\end{array}[/tex]

There are 24 students in a class. Three new students join the class. Work out the percentage change in the number of students in the class.

Answers

Answer:

12.5% increase

Step-by-step explanation:

To find the percentage increase ( students joined)

Take the new number minus the original amount

There are 27 students in the class after 3 joined

27 - 24 = 3

Divide by the original amount

3/24 = 1/8 = .125 = 12.5%

Answer:

12.5%

Step-by-step explanation:

Intial number = 27

Final number = 24 + 3 = 27

Percentage change :-

% change = 3/24 × 100 % change = 100/8 % Change = 25/2 % change = 12.5 %

Una pelota se lanza con velocidad inicial en el eje horizontal de Vx =1.55 m/s, y velocidad inicial en el eje vertical de Vy = 3m/s. Calcule la magnitud de la velocidad, ángulo de lanzamiento, y alcance máximo.

Answers

Answer:

Step-by-step explanation:

The table shows the height of water in a pool as it is
being filled
The slope of the line through the points is 2. Which
statement describes how the slope relates to the
height of the water in the pool?
Height of Water in a Pool
Time
(min)
2
4
6
8
10
Height
(in.)
8
12
16
20
24
The height of the water increases 2 inches per
minute.
The height of the water decreases 2 inches per
minute.
The height of the water was 2 inches before any
water was added.
The height of the water will be 2 inches when the
pool is filled.

Answers

Answer:

Step-by-step explanation:

Slope is the rate of change. For us, this rate of change is inches of water per minute. If this rate of change is 2/1, that means that the rate is changing 2 inches every minute (aka The height of the water increases 2 inches per minute, first choice in your list of possibilities).

Other Questions
find the angle measures given the figure is a rhombus. an email to your friend livibg abroad Solve: 3w + 2 = 20 Write a real world problem that this equation represents. Find the missing side length in the image below The number of home runs scored by teams in the Brooksfield baseball league are normally distributed and have a mean of 94 and a standard deviation of 8. What percentage of the teams have scored more than 102 home runs? 4. Why is vaping so dangerous to your health? Please help I need this answer I know its not hard but I need to write a sassy about this When a schedule of reinforcement is variable, ___________. the rule about reinforcement stays the same the rule about reinforcement never changes the rule about reinforcement changes based on an average number there are no rules about reinforcement Pricing strategy varies significantly across different market structures.a. Trueb. False 1. On the set of axes below, graph . State the roots of whats 5867 times 382 Ribbon diagrams shows secondary structures and appear less detailed than other model types. In one to two sentences, give a reason the chemists would use ribbon diagrams. What type of information do they provide? Ellen makes $20 per hour in her job as a kiental assistant. She works 8 hours per day and 40 hours per week. How much does Ellen make in a day before taxes? Olivia is fixing her bicycle. She starts fixing it at 9:34 am and finishes at 1 pm. How muchtime did she spend fixing her bicycle? Question 1 of 8.What should you do to drive safely in the station?Turn on your hazard lightsRoll your windows down and turn off the radioMaintain idle speed (below 5mph)All of the aboveMark for follow up If the United States passed a tariff on imported steel which of the following would directly benefit?A. Foreign steal companiesB. All Americans would benefit because of the lower price for steelC. Businesses which imports steelD. American steel producers The estimate obtained from a sample of which of the following sizes would most likely be closest to the actual parameter value of a population? Identify the graph that matches each of thefollowing stories:a. I had just left home when I realized I had forgotten my books so I went back to pick them up.b. Things went fine until I had a flat tire.c.I started out calmly, but sped up when I realized I was going to be late. Select the correct answer from the drop-down menu. Find the correct phrase to give this sentence a parallel structure. Paul doesn't like to shovel snow, to mow the lawn, or ( to rake , raking , rake , raked ) leaves.A. to rake B. raking C. rake D. raked Use what you've learned in the lesson to develop a hypothesis about howchanges in technology affect society. Describe your hypothesis and provideevidence for it in one paragraph. Your response should include a referenceto changes in food production and the effects they had on population, Which inequality is represented by this graph?OA. y= -1/5x+1OC. y-1/5x+1