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
riadik2000 [5.3K]
3 years ago
12

Use a proportion to estimate each population. (Please solve both questions, thank you) (I’ll reward you with brainliest :)

Mathematics
1 answer:
hammer [34]3 years ago
7 0

Answer:

<em>Step-by-step explanation:</em>

<em>Step 1. (The capture) Capture a sample  total counted =958, and them back tagged counted=38,total tagged=56 </em>

<em>The idea is to estimate the proportion p = m/N of tagged =102. </em>

<em>Step 2. (The recapture) After everything has settled down, capture a new sample of n fish. Count the number of tagged fish. Suppose that k of them are tagged. </em>

<em>It is reasonable that, k/n would be a good estimante for p = m/N. </em>

<em>Accordingly, for an estimate N of N, se solve the equation m/N= k/n. </em>

You might be interested in
Find W to find the measure of the exterior angle
lions [1.4K]

Answer:

da answer iz w=80% coz they are opposite angels

5 0
3 years ago
Read 2 more answers
Using a sheet of graph paper, solve the following system of equations graphically. Be sure to show any work, use a straight edge
madam [21]

Answer:

<h2> (-1,1)</h2>

Step-by-step explanation:

Given system is

\left \{ {{x+y=0} \atop {x-y+2=0}} \right.

If we graph, the solution would be the interception point between these two lines, because each linear equation represents a line. The lines are attached.

In the graph, you can observe that the solution is the point (-1,1), that is x = -1 and y = 1.

Now, if we want to solve this system by another method, we can just sum both equations and solve for <em>x</em>

\left \{ {{x+y=0} \atop {x-y+2=0}} \right.

2x+2=0\\x=\frac{-2}{2}=-1

Then, we replace this value in one equation to find the other value

x+y=0\\-1+y=0\\y=1

Therefore, the solution is (-1,1)

4 0
3 years ago
An electrician charges $40 to come to your house.She also charges $55for each that she works. The electrician charges you total
shusha [124]

Answer:

Step-by-step explanation:

First, write an equation. 55x+40=190.

X represents the hours the electrician works. The 55 represents the $55 that she charges for each hour she works. The +40 for the $40 that was the price just to come to your house. The 190 is the total cost. Now, solve that equation.

55x+40=190

55x=150

x=2.72727272...

So the answer is 2.727 hours. It can be rounded as needed or turned into a decimal, 2 8/11.

5 0
3 years ago
Someone help!! i’ll give brainliest
erik [133]
7+7+p+3+p+3
14+2p+6
20+2p



3 0
3 years ago
(115) the product of integers x, y, and z is even. is z even?
djyliett [7]
1. X/Y = Z

if x = 6, y = 2, then z = 3, not even

if x = 6, y = 3, then z = 2, even

<span>2. Z=XY </span>

so (z)^2 = 2*k (because x*y*z = 2k, where k is an integer)

<span>Sufficient, as if square of an integer is even ,then the integer is even</span>
5 0
4 years ago
Other questions:
  • The height of a right cylinder is 3r , where r is the radius. Write a function f in simplest form that represents the ratio of t
    9·1 answer
  • Lisa went to the hardware store and bought 12 pieces rope. Each rope was 34 of a meter long. If the rope cost $3.50 a meter, how
    15·1 answer
  • Brittany read 100 pages in 97 minutes. How many pages can she read in 1 minute
    13·1 answer
  • The membership in the Lego Club decreased from 120 members in August to 82 members in October. What was the percent decrease fro
    9·2 answers
  • Can some PLEASE help me this is my 3rd time asking the same question
    12·1 answer
  • 11. What geometric shape is a roll of paper towels?<br> (98)
    5·1 answer
  • PLEASE HELP!!!! THIS IS DUE IN AN HOUR! Also please don’t give me the wrong answer. I will know if u do especially if u do it ju
    14·1 answer
  • Find the length of the unknown side. Round your answer to the nearest tenth.
    8·1 answer
  • NEED HELP!!!!!!!!!!!!!!!!!!!! anybody know???????????????????????????
    9·1 answer
  • Hey guys need help here
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!