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Alina [70]
3 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]3 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!!!
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The table shows the time y (in minutes) it takes to make x burritos. A- graph B- how long does it take to fix 7 burritos
DedPeter [7]

Answer:

5.25 minutes

Step-by-step explanation:

7 * 0.75 = 5.25

5 0
2 years ago
Select all the examples of categorical data. colors number of siblings favorite pet profits genre of music
bulgar [2K]

Answer:

Color, favorite pet, genre of music

Step-by-step explanation:

Categorical variables are simply statistical variables which are non - numeric, usually employed in characterization and groupings based on a certain number of fixed attributes, categories. In the options atated above, the categorical variables fall under a heading with a limited and fixed attributes such as color, pet and genre of music. However, options such as number of siblings and profit are purely numeric variables which can take up any numeric digits and allow for direct numeric computation. They are called quantitative variables.

3 0
3 years ago
Which sequence of similar transformations could map △ABC onto △A'B'C'?
nadya68 [22]

Answer:  A sequence of similar transformations of dilation and translation could map △ABC onto △A'B'C'.


Step-by-step explanation:

Similar transformations:  If one figure can be mapped onto the other figure using a dilation and a congruent rigid transformation or a rigid transformation followed by dilation then the two figures are said to be similar.

In the attachment △ABC mapped onto △A'B'C' by a sequence of dilation from origin and scalar factor k followed by translation.

7 0
3 years ago
Read 2 more answers
PLEASE HELP!! I will mark brainliest
Arisa [49]

Answer:

the top one and bottom one

Step-by-step explanation:

4 0
3 years ago
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Determine the area of the figure
aliya0001 [1]

The area of ​​the trapezoid is x+11 cm.

Given a trapezoid has one side of (x+6) cm, the other side is 5 cm, and the height is 2 cm.

A two-dimensional quadrilateral consisting of the sum of non-adjacent parallel sides and a suitable non-parallel side is denoted as a trapezoid.

Now we will use the formula to find the area of ​​a trapezoid

Area = 1/2 × (base 1 + base 2) × height

Here base 1 = (x+6) cm, base 2 = 5cm and height = 2cm

Substituting the values ​​into the formula,  we get

Area = 1/2 × (x+6+5) × 2

Area = 1/2 × (x+11) × 2

Area = x+11

Thus, the area of ​​the given figure when one side is x+6, the other side is 5 cm and the height is 2 cm is x+11 cm.

Learn more about the area of trapezium from here brainly.com/question/15815316

#SPJ1

8 0
2 years ago
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