The formula for the density of a bacteria population is \dfrac NA A N ​ start fraction, N, divided by, A, end fraction where there's an average of NNN bacteria in an area size AAA. Guang and Orion are doing an experiment in school for which they need to measure the density of a bacteria population after a certain solution has been introduced. Guang reports a density of 450045004500 bacteria per square centimeter and Orion reports a density of 505050 bacteria per square millimeter. Which one reports a higher density? Choose 1 answer:

Answers

Answer 1

Answer:

Guang reports a higher density of 4.5 × 10⁷ bacteria/m²

Step-by-step explanation:

Since Guang reports a density of 4500 bacteria per square centimeter and Orion reports a density of 50 bacteria per square millimeter, we convert both densities into bacteria per square meter to compare their values.

So, for Guang 4500 bacteria/cm² = 4500 bacteria/cm² × 10⁴ cm²/1 m² = 4500 × 10⁴ bacteria/m² = 4.5 × 10⁷ bacteria/m²

For Orion 50 bacteria/cm² = 50 bacteria/cm² × 10⁴ cm²/1 m² = 50 × 10⁴ bacteria/m² = 5 × 10⁵ bacteria/m²

Since 4.5 × 10⁷ bacteria/m² > 5 × 10⁵ bacteria/m², Guang reports a higher density of 4.5 × 10⁷ bacteria/m²

Answer 2

Answer:

B.) orion reports a higher desity than guang

Step-by-step explanation:

We found that Guang's reported density is 45 bacteria/ millimeter^2, while orion's reported density is 50 bacteria/ millimeter^2.


Related Questions

Order the following list from least to greatest.
|-18|, -30, 35, -9.3

Answers

Answer:

Step-by-step explanation:

-30, -9.3, |-18|, 35.

Answer: -30, -9.3, |-18| (which is now just 18), and 35

Step-by-step explanation: The absolute value sign around |-18| makes the -18 an 18. For example, |-5| will become positive 5. |7| would stay positive even with the absolute value sign.

As negative numbers get bigger, they go left on the number line, making them smaller. Positive numbers go right on the number line, making then bigger.

Given f(x) = -6(4 - x), what is the value of f(-0.6)?
A)-30
B) -27.6
C) -60
D) -24.6

Answers

Step-by-step explanation:

f(x) = -6(4-x) which f(-0.6)

therefore:

we multiple -6×4= -24 and -×- =+ this implies +6×x = 6x

we add:

-24 + 6x which we already know x is = -0.6

-24 + 6 (-0.6)

-24 + 3.6

= the big number always carry the sign

the answer is = -27.6

13 POINTS! EVALUATE AND SHOW ALL WORK

Answers

Answer:

0

Step-by-step explanation:

Solving in steps

3| 4.5 - 2| - 5 |-1.5 -(- 3)| =3 |2.5| -5 |-1.5 + 3| =3*2.5 - 5|1.5| =7.5 - 5*1.5 =7.5 - 7.5=0

Evaluate the expression:
3(a + b - 3) - 2(2a + b - 4) when a = -1 and b = 1

Answers

Answer:

1

Step-by-step explanation:

What is the value of K? k=___​

Answers

Answer:

I'm pretty sure the answer is 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

In triangle LON, <O = 90°

According to Pythagoras' Theorem

(Hyp)² = (Base)² + (Perp)²

m² = 4² + 8²

m² = 16 + 64

m² = 80

Taking square roots on both sides

√m² = √80

m = 8.94

In triangle LMN, <N = 90°

According to Pythagoras' Theorem

(Hyp)² = (Base)² + (Perp)²

(8 + k)² = l² + 4²

2/3 of 1/2
What is the answer.

Answers

Answer:

1/3 or 0.33333333333_

Step-by-step explanation:

2/3 of 1/2
to solve this, remember when a number is “of” another number, it is being multiplied.

so,

2/3 x 1/2 = 2/6 = 1/3

therefore, the answer is 1/3. hope this helps! (:

Determine whether the following rates are equal or not using unit rates: 60 units in 3 minutes and 80 units in 4 minutes​

Answers

Answer:

The rates are equal

Step-by-step explanation:

To see if the rates are equal, divide both of the units by the number of minutes:

60/3

= 20

80/4

= 20

This means both rates are equal, since we got 20 for both of them

This means the rate is 20 units per 1 minute, for both rates.

So, the rates are equal.

Answer:

They are equal

1=20

2=40

3=60

4=80

Step-by-step explanation:

What integer is equal to |-10| + |-20|

Please answer

Answers

Answer:

30

Step-by-step explanation:

The absolute value function always gives a positive value, that is

| - a | = | a | = a

Given

| - 10 | + | - 20 |

= 10 + 20

= 30

Answer:

|-10| + |-20| = 30

Step-by-step explanation:

Absolute Value

The absolute value of x, written |x| is a positive number that represents the distance from the origin and the number.

In practice, the absolute value is found writing the number without the negative sign, if present.

For example:

|-9| = 9

|76| = 76

|0| = 0

The given expression is

|-10| + |-20|

Calculate each absolute value separately:

|-10|=10

|-20|=20

Thus:

|-10| + |-20| = 10+20 = 30

|-10| + |-20| = 30

NEED HELP PLEASE WORTH 78 POINTS!!!

Answers

27.  1,3,5,15

28.  1,2,3,5,6,10,15,30

29.  1,2,3,6,9,18

30.  1,17

--------------------------------------

31.  30x30=900

32.  12x12x12x12= 20,736

33. 11x11x11= 1331

Your Welcome, have a nice day, and please consider giving me Brainliest! :)

9514 1404 393

Answer:

  27.  15 = 1×15 = 3×5

  28.  30 = 1×30 = 2×15 = 3×10 = 5×6

  29.  18 = 1×18 = 2×9 = 3×6

  30.  17 = 1×17

  31.  base: 30; power: 2; value: -900

  32.  base: 12; power: 4; value: 20,736

  33.  base: 11; power: 3; value: 1,331

Step-by-step explanation:

27-30: The factor pairs can be found by looking at the unique subsets of the set of prime factors. The product of the elements of each subset will be a divisor. The "empty" set can be considered to contain 1. When divisors are listed in numerical order, the factor pairs can be found by pairing factors from each end of the list, working toward the center. If the number is a perfect square, there will be an odd number of divisors, and the center number will be used twice

Examples:

  18 = 2×3×3 (prime factorization).

Subsets of these factors are  {}, {3}, {3}, {3,3}, {2}, {2,3}, {2,3}, {2,3,3}. Then the divisors are 1, 2, 3, 6, 9, 18. The factor pairs are 1×18, 2×9, 3×6.

  25 = 5×5 (prime factorization).

Unique subsets are {}, {5}, {5,5}. Divisors are 1, 5, 25. Factor pairs are 1×25, 5×5.

__

The purpose of an exponent is to indicate repeated multiplication. That is, just as 2×3 means 2+2+2 (repeated addition), the use of an exponent means repeated multiplication: 2³ means 2×2×2.

This idea can be extended to give several rules of exponents--rules for multiplication, division, powers, and roots. All of these rules derive from the basic idea of repeated multiplication.

The number that is repeatedly multiplied is called the base. The exponent is called the power.

In plain text, the caret (^) symbol is used to signify an exponent. If an exponent is other than a single number or variable, it must be enclosed in parentheses, so that there is no confusion regarding what the exponent consists of. (This is an "order of operations" issue, since exponentiation must happen before any other operation.) In typeset math expressions, an exponent is rendered in superscript text.

31. -30^2 = -900 . . . base is 30, power is 2. The minus sign is not part of the base. Again, this interpretation is based on the "order of operations".

32. 12^4 = 20,736 . . . base is 12, power is 4.

33. 11^3 = 1,331 . . . base is 11, power is 3

all functions are relations but why not all relations are functions​

Answers

Answer:

All functions are relations, but not all relations are functions. A function is a relation that for each input, there is only one output. Here are mappings of functions. The domain is the input or the x-value, and the range is the output, or the y-value.

Answer:

Step-by-step explanation:

A relation between members of two sets X and Y is any set of ordered pairs {(x1,y1) (x2,y2) … }, finite or infinite in their number, provided the first member is from X and the second member is from Y. (Let’s not mention the uncountable possibility here).

E.g., if X = {Sunday, Monday, …, Saturday} and Y = {1,2, …, 31}, then the set {(Monday,1) (Tuesday,2) … (Monday,8) (Tuesday,9) … (Sunday,28)} is a useful relation for some February calendar, somewhere. It is “one-to-many”. And note that set Y need not be covered, but X must be. This distinguishes the domain of the relation (days of the week here) from its codomain (whole numbers 1 to 31 here).

Considering the vast set of all relations, there is one subset of great importance, those relations that have unique codomain values for each domain value. That is, each x in X is paired unambiguously with exactly one y in Y. These special relations are functions. The set of y in Y which have been paired with some x in X is called the range of f. Functions may still be “many-to-one”, as in y = r(x) which gives x rounded to the nearest integer. Thus r(2.3) = r(1.9) = 2.

Within the subset of functions are the one-to-one functions, which also have the property that every y in the range is paired with exactly one x in the domain. Because of this, these are the only functions that have an inverse function. Thus, the inverse function can be written as {(y1,x1) (y2,x2) … }. This shows that the domain and range of the original function are exactly exchanged in the inverse function.

E.g., y = tan(x) is one-to-one with domain [-pi/4 , pi/4] and range [-1,1]. Its inverse is x = arctan(y) with domain [-1,1] and range [-pi/4 , pi/4]. The roles of x and y are unambiguous, and shouldn’t be exchanged: x always in [-pi/4 , pi/4] and y always in [-1,1].

Jackie and Luke are working on a project for social studies.
They create a slide show with 250 slides. if they worked on it for 8 hours,

How many slide did they created per hour?​

Answers

Answer:

31.25 slides per hour.

Step-by-step explanation:

250 slides ÷ 8 hours = 31.25 slides per hour

You're welcome!

Answer:

You are trying to find how many slides they did per hour so the answer to that would be 31.25

Step-by-step explanation:

250 ÷ 8 = 31.25

Help I need help with this question

Answers

Answer:

X = 208

Step-by-step explanation:

how much is 3375.9 missing to reach 6567.66 , in scientific notation​

Answers

Answer: 3.19176 * 10^3

Step-by-step explanation:

Step 1: Subtract 3,375.9 from 6,567.66 = 3191.76

Step 2: Convert 3191.76 to scientific notation

Note: The purpose of scientific notation is to make big numbers into small numbers by moving the decimal point and then showing how many decimal places you moved by using powers of ten.

Step 3: Move the decimal 3 places to the left, and multiply by 10^3.

3.19176 * 10^3

Write and graph an inequality for the given solution set {n∣n≥−2}

Answers

Answer:

Explanation:

An inequality is used to represent unequal expressions or numbers. An inequality with the solution set [tex]n \ge -2[/tex] is: [tex]2n - 6 \ge -10[/tex]

Given that:

[tex]n \ge -2[/tex] --- the solution

To generate an inequality with the above solution, we do the following:

Subtract 3 from both sides of the inequality

[tex]n - 3 \ge -2 - 3[/tex]

[tex]n - 3 \ge -5[/tex]

Several operations can be carried out. The most important thing to note is that, whatever operation is done on the right-hand side of the inequality must be done on the left-hand side.

We can also multiply both sides by 2

[tex]2 \times (n - 3 )\ge -5 \times 2[/tex]

[tex]2n - 6 \ge -10[/tex]

Hence, an inequality with the solution set [tex]n \ge -2[/tex] is:

[tex]2n - 6 \ge -10[/tex]

See attachment for graph

Read more about inequality at:

https://brainly.com/question/24457639

Choose the best description for the real number 4 point 6 repeating . (4 points)

Question 2 options:

1)

Irrational, because it is a terminating decimal

2)

Irrational, because it is a repeating decimal

3)

Rational, because it is a terminating decimal

4)

Rational, because it is a repeating decimal

Answers

Answer:

4

Step-by-step explanation:

Irrational number are real numbers that do not end and cannot be written as a fraction.

4.66666...

can also be written as 4 2/3 therefore it is rational because it can be written as a fraction.

It is not a terminating decimal because it doesn't end(repeating).

what is the following sum? 4(5rootx2y)+3(5rootx2y)​

Answers

Answer: Choose which answer you think fits

Step-by-step explanation:

The roots are there to confuse you. They have the exact same numbers under the radical, so you can treat it like a variable and add 4 + 3 since theyre like terms.

[tex]7(5\sqrt{x2y} ) = 35\sqrt{x2y}[/tex]

If that's an x^2, bring the x out and keep the y inside the radical to get:

[tex]35x\sqrt{y}[/tex]

If y varies directly as x and the constant variation is -2, which equation represents this relationship?
please answer by 11:59 10-5-2020

Answers

Answer:

y = -2x

Step-by-step explanation:

If y varies directly with x, it is:

y = kx

Constant is -2, it means k= -2

y = - 2x

Solve for y 2x-5y=10

Answers

Answer:

y = 2/5x - 2

Step-by-step explanation:

Step 1: Write equation

2x - 5y = 10

Step 2: Solve for y

Subtract 2x on both sides: -5y = 10 - 2xDivide both sides by -5: y = -2 + 2/5xRewrite: y = 2/5x - 2
y= 2/5x-2
explanation:
write the equation out—

-5y=10-2x

subtract 2x from both sides —

-5y=10-2x

divide both sides by -5 —

y=-2+2/5x

rewrite your equation —

y= 2/5x-2

Liz watches a movie that is 105 minutes long how long is the movie

Answers

Answer:

1 hour and 45 minutes or 105 minutes

Step-by-step explanation:

105 minutes = 60 minutes + 45 minutes = 1 hour and 45 minutes

Answer:

105 min

Step-by-step explanation:

LOL i dont know what u asked this question for but the answer is 105 min it tells u right there "Liz watches a movie that iis 105 min long"  i sound so mean rn sorry if i offended u but i just think this is sort of funny

What is 1 and 3 5ths divided by 2 and one half

Answers

let’s solve step by step:
1 3/5 converts to 8/5
2 1/2 converts to 5/2
8 x 2 = 16
5 x 5 = 25

final answer: 16/25

hope this helps

2 (t -3) ² - 72=0?
Math by extracting square roots​

Answers

Answer:

2(t-3) ^2 = 72

(t - 3)^2 = 36

t - 3 = 6 or t - 3 =-6

t = 6+3 = 9. or t =-6 +3 = -3

t = 9 or -3

We have that

The Value of t is

t=9

From the question we are told

2 (t -3) ² - 72=0

In Answering the Question we must follow these few steps

Firstly we must make t the subject of the FormulaSecondly,We perform the necessary arithmeticFinally,The value of t will be gotten

Generally the derivation of t is mathematically given as

[tex](t-3)^2=\frac{72}{2}\\\\t-3=\sqrt{\frac{72}{2}}\\\\t-3=6\\\\t=9[/tex] [Firstly we must make t the subject of the Formula

Firstly we must make t the subject of the FormulaSecondly,We perform the necessary]

Therefore

The Value of t is

t=9 [Finally,The value of t will be gotten]

For more information on this visit

https://brainly.com/question/23366835

Emery borrowed money from her brother to buy a new phone and is paying off a fixed amount each week. After 2 weeks, she will owe $456, and after 5 weeks, she will owe $228.

a. Write an equation in point-slope form to represent the situation.

b. What was the original amount Emery owed?
608$
c. How much is being paid each week?
76$

I only need the answer to question 1

Answers

Answer:

A. $608 B. $76

Hope this helps

Answer:

[tex]y=5w+2w=228[/tex]

Step-by-step explanation:

There are 14 girls and 21 boys in Mrs. Andrews’s gym class. To play a certain game, the students must form teams. Each team must have the same number of boys and girls. What is the greatest number of teams Mrs. Andrews can make if every student is on a team?

Answers

Answer:

7 teams of five with 2 girls and 3 boys

What are 2 examples of proportional relationships?

Answers

Answer:

A proportional relationship is states that they are the same. For example, 1/2 and 6/12 have a proportional relationship, which means they are the same.

Step-by-step explanation:

hope this helped ✨

Answer:

A proportional relationship is states that they are the same. For example, 1/2 and 6/12 have a proportional relationship, which means they are the same.

Step-by-step explanation:

Choose the equation for the graph

Answers

Answer: a) Y= 2|x-3|+1

Step-by-step explanation:

Hope this helps

The equation that describes the graph is the one in option a:

f(x) = 2*|x - 3| + 1

Which equation represents the graph?

We can see that the graph is an absolute value equation with a vertex in the point (3, 1), so the absolute value function must be of the form:

f(x) = a*|x - 3| + 1

Now, we also can see that the arms open upwards, so the slope must be positive, and we can see that for each increment in x, we have an increment of 2 units in y, so the slope is a = 2.

This means that the function is:

f(x) = 2*|x - 3| + 1

So the correct option is a.

If you want to learn more about absolute value:

https://brainly.com/question/1782403

#SPJ2

how to make something a subject ​

Answers

Answer:

I dont understand the question?

Step-by-step explanation: your trying to pick a subject??

What are the next three terms of the geometric sequence 32, -16, 8, …?
a.
2, 1, 1/2
c.
-8, 16, -32
b.
4, 2, 1
d.
-4, 2, -1

Answers

Answer:

B is your answeer

Step-by-step explanation:

GL hope i helped<333!!

44 Points Please help me on this

Answers

Answer:

Yes.

Step-by-step explanation:

This is because on a protractor a 180 degree angle is just a line.

SOMEONE HELP ME PLZ ASAP!!!!​

Answers

A=22cm

B=21cm

C=23cm

Good luck

Consider the following Expression.
6x-9x-2=-2x-2
What is the value of x?

Answers

Answer:

The answer is X = 0

x=0

Another easy way to get the answer if you’re too lazy to do the work or don’t get it at all is so to go to an math app
Other Questions
how do you do this step by step? What is the answer? HELP NEEDED!!!!!! Marley used 7 cups of water to make 4 loaves of French bread.What equation can be used to model the total cups of water needed y for making x loaves of French bread? Write the equation in the form y =kx . Mary discovered that the cell membrane of a bacteria acts like a fence because it keeps some things in and other things out. A. ObservationB. Analogy C. Inference Mary walked into her room where her little son was playing, found a broken window, and thought immediately that her son had broken it.A. ObservationB. Analogy C. Inference Mary noticed that her counter top was warm to the touch.A. ObservationB. Analogy C. Inference Mary noticed that the side walk was wet and thought that it may have been that the sprinklers had been on recently.A. ObservationB. Analogy C. Inference Mary counted and recorded 20 heart beats in 10 seconds.A. ObservationB. Analogy C. Inference The lecturer compared the human eye to a camera lens.A. ObservationB. Analogy C. Inference What elements at the Taj Mahal create a sense of continuous space? I dont know what to do can someone please help me ASAP Seven times a number is forty-two less than the number. What is the number? 4. What would be an example of a norm that is also a law?pulling your car over to the side if there are emergency vehicles trying to passwaiting until your number is called out at the deli to ordersaying, 'Excuse me' when you bump into someoneleaving a tip for a server at a restaurant Which process is a chemical change?burning a matchboiling watermelting icebreaking glass I NEED HELP RIGHT NOW!!Jenine is twice as old as her brother Mark. If the sum of their ages is 24, How hole is Jenine? Based on the kinetic molecular theory (KMT), which statement is true?The particles of matter are do not move.Matter is composed of very small particles.The particles of matter have zero kinetic energy.Matter is made up of only charged particles. Need help ASAP! Tysm what is the historical context behind the city on a hill speech? PLEASE ANSWER I NEED HELP!!! The number of boxes of cookies sold by Sarah was 50 fewer than the number of boxes of cookies sold by Keiko. The number of boxes of cookies sold by Imelda was22 greater than the number sold by Keiko. Write an algebraic expression for each quantity. Use x to represent the unknown value.the number of boxes of cookies sold by Sarah= the number of boxes of cookies sold by Keiko= the number of boxes of cookies sold by Imelda Use the drop-down menus to complete the steps for creating a new note. 1. Open the Notes view by clicking Notes in the 2. Click New Note and type the information.3. Change the to categorize the note.4. off of the note to save it on the Notes view. Which of the following is an example of the Law of Conservation of Mass? The picture is above. While filming the video documentary The March of the Penguins, what did French director Luc Jacquet choose to do that enabled him to work outside of the documentary genre? According to this article, how does this movie fit the description of a video documentary presented in the lecture? What is the main reason why Catherine's mom wants to stay at the clinic during David'sappointment? PLEASE HELP!!!!!!!I HAVE TO WTITE A ESSAY ON PEARL HARBOR THATS DUE IN 1 HOUR.