1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka [77]
3 years ago
6

Researchers recorded that a group of bacteria grew from 30 to 900 in 18 hours. At this rate of growth, how many bacteria will th

ere be in 36 hours from the start of the experiment? Round to the nearest whole number.
Mathematics
1 answer:
Vadim26 [7]3 years ago
7 0

Answer:

The will be 27000 bacteria in 36 hours from the start of the experiment

Step-by-step explanation:

In the first 18 hours:

The number of bacteria grew from 30 to 900.

So it grew by a factor of 900/30 = 30.

36 hours from the start of the experiment:

That is, the next 18 hours.

It will also grow by a factor of 30.

From 900 to 900*30 = 27000

The will be 27000 bacteria in 36 hours from the start of the experiment

You might be interested in
PLEASE HELLPP!!!
Maslowich

Step-by-step explanation:

13.3 + ( - 7) \\ 13.3 - 7 = 6.3

4 0
3 years ago
Which relationships have the same constant of proportionality between y and x as the equation y
sdas [7]

Answer:

I'm not too good at this but I got 10/4??

Step-by-step explanation:

please let me know if I'm right!

6 0
3 years ago
A Social welfare association decides to supply drinking water for the flood affected people. The drinking water is filled in a c
pickupchik [31]

Answer:

1,499 liter

Step-by-step explanation:

The rest of the question is:

each is in the shape of a cylinder of radius 21 cm and height is 50 cm.

==============================================================

The quantity of water left in the tanker after distribution

= Total quantity - Distributed quantity

Total quantity = Volume of the giving figure

                       = Volume of the cylinder + volume of 2 hemispheres

Volume of the cylinder of 4.2 m length and 1.2 m of a diameter.

L = 4.2 and radius = r = 0.5 * diameter = 0.5 * 1.2 = 0.6

Volume of cylinder = π r² L = (22/7) * 0.6² * 4.2 = 4.752 m³

Volume of 2 hemispheres = 2*0.5 * (4/3) π r³ = (4/3) * (22/7) * 0.6³

                                           =792/875 m³

Total volume = 4.752 + 792/875 = 198/35 ≈ 5.657 m³

Distributed quantity = 60 times the volume of a cylinder of radius 21 cm and height is 50 cm

Distributed quantity = 60 * π r² L = 60 * (22/7) * 21² * 50 = 4,158,000 cm³

Since 1 m³= 1,000,000 cm³

Distributed quantity = 4,158,000 cm³ = 4.158 m³

The quantity of water left in the tanker after distribution =

 = 198/35 - 4.158 ≈ 1.499 m³

Since 1 m³= 1,000 liter

The quantity of water left in the tanker after distribution =

  =  1.499 m³ = 1.499 * 1000 = 1,499 liter

7 0
4 years ago
Read 2 more answers
In a survey of sleeping habits, 8400 adults were selected randomly and contacted by telephone. Based on a medical association's
Andreas93 [3]

Answer:

d. None of the above.

Step-by-step explanation:

<em>a. By the law of large numbers, it would again be 46%. </em>

FALSE. This proportion (46%) is a sample statistic, that can or can not be repeated in another sample.

<em>b. By the law of large numbers, the smaller (second) survey will certainly produce a sample proportion farther from the true population proportion than the larger (first) survey. </em>

FALSE. Smaller samples will produce wider confidence intervals for the estimation of the population proportion, but larger samples does not necessarily gives us better point estimations of the true proportion. A small sample can be closer to the true proportion than a large sample, although is less probable.

<em>c. The proportion computed from the sample of 5000 people would be more accurate because smaller samples tend to be more homogeneous than larger samples. </em>

FALSE. There is no evidence to claim that smaller samples are more homogeneous.

<em>d. None of the above.</em> TRUE

6 0
3 years ago
2x-3y&gt; or equal to 12
Drupady [299]

Answer:

it's not greater than it would be 2x-3y because you can add then together because the not the same variable

Step-by-step explanation:

5 0
4 years ago
Other questions:
  • 3/7x + 5= 8 solve the equation
    12·2 answers
  • The diameter of a circle has endpoints whosever coordinates are R(-2,2) and S(4,2). find the center of the circle
    14·1 answer
  • Jen Anderson takes out a mortgage for $120,000. This is a loan of 30 years at $500 per month. This gives a total interest cost o
    13·2 answers
  • What is one word descriptor for sustituye and solve?
    15·1 answer
  • (a) Write 389% as a decimal.<br> (b) Write 0.005 as a percentage.
    14·1 answer
  • PLease help geometry question
    5·2 answers
  • Could someone please help me? Will mark brainlist!
    5·2 answers
  • Graph the inequality in the coordinate plane negative 3x + 2y​
    8·1 answer
  • .Which point is located at (4, –2)?
    14·2 answers
  • Solve for x. Round your answer to the nearest hundredth.<br> 2x^2-6x+3=0
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!