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
Katarina [22]
3 years ago
12

A 3-column table with 4 rows. Column 1 has entries Catfish, bass, trout, all fish. Column 2 is labeled Sample 1 with entries 3,

9, 8, 20. Column 3 is labeled Sample 2 with entries 5, 9, 6, 20. The proportion used to find the average number of trout you would expect to live in the pond is 7 20 = x 400 . Solve the proportion to find the expected number of trout in the population. The expected number of trout in the population is .
Mathematics
1 answer:
Maksim231197 [3]3 years ago
6 0

Answer:

140  

Step-by-step explanation:

The table is:

<u>                |Sample 1      | Sample 2</u>

catfish     | 3                 | 5

bass         | 9                 | 9

trout         | 8                 | 6

all fish      | 20               | 20

The average number of trouts is (8 + 6)/2 = 7

The average number of the total amount of fish is 20

So, there are 7 trouts within 20 fish. To find the expected number of trouts in a population of 400 fish, we have to solve the next proportion:

7 trouts / 20 fish = x trouts / 400 fish

x = 7*400/20

x = 140 trouts

You might be interested in
I need help with my Clock
anyanavicka [17]
5 -> 15

6 -> 20

7 -> 25

8 -> 30

9 -> 35

10 -> 40

then in ones:

after 41 would be 42 and 43


the elapsed time would be 43 minutes :)

hope this helps :)




8 0
3 years ago
PLEASE HELO ASAP, 12 POINTS!!!
never [62]

Answer:b

Step-by-step explanation:l

3 0
3 years ago
Read 2 more answers
After the first term in a sequence, the ratio of each term to the preceding term is r. If the first term is a, what is the third
irinina [24]

Answer:

The 3rd term is

ar^2

Step-by-step explanation:

From the given information, the first term of the sequence is

a_1=a

The common ratio of the sequence is

r

The explicit formula for a geometric sequence is :

a_n=a_1(r^{n-1})

To find the third term, we put n=3 to get:

a_n=a(r^{3-1})

This simplifies to:

a_3=ar^2

7 0
3 years ago
If AC = x + 5 and AB = 3x - 1... what is the length of BC?
Hatshy [7]
If B is the midpoint of AC, then |AB| = |AC|.
|AB| = 3x + 2
|BC| = 5x - 10
Therefore we have the equation:
3x + 2 = 5x - 10     |subtract 2 from both sides
3x = 5x - 12      |subtract 5x from both sides
-2x = -12      |divide both sides by (-2)
x = 6

Read more on Brainly.com - brainly.com/question/11324096#readmore
4 0
3 years ago
Solve this system and list the method that you chose graphing substitution or elimination Y=2x-12
zmey [24]
Substitution

y = 2x - 12
y = -x + 3

-x + 3 = 2x - 12
+ x + x
-----------------------------
3 = 3x - 12
+ 12 + 12
-----------------------
15 = 3x
------ ------
3 3

x = 5


y = 2(5) - 12
y = 10 - 12
y = -2


The final answer is (5,-2).
8 0
3 years ago
Other questions:
  • An item is priced at $13.04. If the sales tax is 5%, what does the item cost including sales tax? If necessary, round to the nea
    7·2 answers
  • *PLEASE HELP* <br> simplify the expression and show your work
    7·1 answer
  • Need help please!!!!!!!
    12·2 answers
  • What is 39 converted in yards per second
    6·1 answer
  • Dave has had a gym membership for 10 weeks. He goes to the gym 5 times a week. Each visit, he exercises for 1.75 hours. He spend
    9·1 answer
  • 36×10 to the power of 5
    9·1 answer
  • Please answer the picture
    7·1 answer
  • Whats the perimeter of a square with a side measurement of 6 in?
    15·1 answer
  • Which correlation coefficient could represent the relationship in the scatterplot?
    9·1 answer
  • PLEASE HELP ANSWER THESE
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!