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
Alina [70]
4 years ago
15

A wildlife service wanted to estimate the number of alligators in a river so they tagged 90 alligators and released them back in

to the river. Later they found that a sample of 200 alligators contained 23 that were tagged. Assuming that the tagged alligators are evenly distributed, what is the best estimate of the number of alligators in the river?
This is from a practice test I found online for a placement test for a community college. I have never encountered these type of word problems before. I don't even know where to start.
Mathematics
1 answer:
lilavasa [31]4 years ago
5 0
You can solve this with a proportion. If you know that 23 tagged alligators were in a 200 alligator sample, there are 90 tagged alligators in the entire river. Written otherwise:

23/200 = 90/x    

and solve for x:

x = 782.608...

So the "best estimate" would be around 783 alligators. Hope that helps! If you liked this answer please rate it as brainliest!! thank you!!!
You might be interested in
Frances has 4 square baking dishes. Each pan is 7 inches × 7 inches × 2 inches. Which expression will give her the total volume
julia-pushkina [17]

Answer:

D. (7^2 X2) x 4

The equation inside the parenthesis finds the volume of one pan and then that is multiplied by 4 which is the total number of pans. This will find the volume of all 4 pans.

5 0
3 years ago
I’m confused please help
mart [117]

Answer:

im guessing the answer is 43.7

Step-by-step explanation:

7 0
3 years ago
What is 173.22 divided by 4?
Kisachek [45]
43.305 or in Mixed Number is 43 61/200 or in improper Fraction is 8661/200
3 0
3 years ago
Read 2 more answers
What is the additive inverse of 7/2 ?<br> A) −2/7<br> B) −7/2<br> C) 2/7<br> D) 7/2
snow_lady [41]
The additive inverse of 7/2 would be -7/2 (option B) Since its. opposite !

A)is the additive inverse of C) ; C) is the additive inverse of A) (not your answer)

B. is the additive inverse for this problem (7/2) so thats how we found that this is your answer (answer)

D is the same thing for the problem (7/2) (not your answer)

7/2 isnt the additive inverse for 7/2 because they are the SAME not the opposite.

+ = - (Positive = negative)

- = + (negative = positive)
6 0
3 years ago
The table shows the gallons of water in a pool over time.
Valentin [98]

Answer:

6 gallons per minute

Step-by-step explanation:

Let the function that models the quantities of water, Q (in gallons) in a pool over time, t (in minutes), is  

Q = a + bt ........... (1)

Now, Q(t = 0) is given to be 50 gallons.

So, a = 50 and b denotes the rate at which the quantity of water in the pool is decreasing and it is given by the slope of equation (1).

Now, two points on the graph are (0,50) and (1,44).

So, the slope = b =  = - 6 gallons per minute.

Therefore, the equation of this situation is given by Q = 50 - 6t, where the slope is equal to - 6 gallons per minute. (Answer)

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is 5 13/12 simplified
    9·1 answer
  • X minus fourteen equals negative thirty-three
    10·2 answers
  • According to the Gallup survey, 23% of Americans reported eating less meat in the past year than they had previously. Results fo
    9·1 answer
  • Please help guys!! This is kind of hard
    9·1 answer
  • A group of friends are ordering food. The total amount that they can spend on their food bill is $41, including the delivery cha
    14·1 answer
  • Which is equivalent to <img src="https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B9%7D%20%5E%7B%5Cfrac%7B1%7D%7B2%7Dx%20%7D" id="TexForm
    12·1 answer
  • Evaluate the expression 7a² - 3b³ when a) a= 4, b= -2 b) a= -8, b=5
    8·1 answer
  • Write the slope intercept form of the equation of the line through the given point with the given slope through (-2,5),slope-3/2
    8·1 answer
  • There is one fifth of a sandwich to share equally between 2 people. How much of the sandwich will each person get? Use the numbe
    8·1 answer
  • What is 55-(0)........
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!