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
wolverine [178]
3 years ago
6

I NEED HELP ASAP Catherine finds that in a randomly selected sample of 500 families in her home town, 45% own at least one compu

ter. Her research shows that there are a total of 35,000 families in her town.
Which statements are true?

Select each correct answer.


To estimate the percentage well, she would need to collect data for all 35,000 families.

Since her sample was randomly selected, she can reasonably infer that about 45% of the 35,000 families in her town own at least one computer.

If she collected data for a random sample of 1000 families in her home town, then that percentage would be a better estimate for the percentage of all 35,000 families that own a computer.

Since her sample was only 500 families, it is not possible that the percentage is a good estimate for the percentage of all 35,000 families that own a computer.
Mathematics
2 answers:
EastWind [94]3 years ago
6 0
A is the correct answer
Nezavi [6.7K]3 years ago
5 0

Answer:

c and d

Step-by-step explanation:

You might be interested in
X + 5y = -27<br> -2x - 5y = 24
Rashid [163]

Answer:

Step-by-step explanation:

x+5y=-27

-2x-5y=24

If the signs are the same u minus if they are different u add

So they are different were gonna add

x+5y=-27

-2x-5y=24

-1=-3

You cant divide it further x=-3

Next were gonna subsitute in any equation

x(-3)+5y=-27

-3+5y=-27

+3 to -27

-7+3=-24

5y=24

24/5=4.8 y=4.8

I hope this helps.

4 0
2 years ago
How do you multiply powers that have the same base
Alecsey [184]

Answer:

The exponent "product rule" tells us that, when multiplying two powers that have the same base you can add the exponents in this example you can see how it works. Adding the exponents Is just a short cut! the "power rule" tells us that raise power to a power, just multiply the exponents

4 0
3 years ago
If the growth rate of bacteria at any time t is proportional to the number present at t and triples in 1 week
serg [7]

The population after 20 weeks will be 403.42x_{0} in which x_{0} is the initial population.

Given that the growth rate of bacteria at any time t is proportional to the number present at t and triples in 1 week.

We are required to find the number of bacteria present after 10 weeks.

let the number of bacteria present at t is x.

So,

dx/dt∝x

dx/dt=kx

1/x dx=k dt

Now integrate both sides.

\int\limits {1/x} \, dx=\int\limits{k} \, dt

log x=kt+log c----------1

Put t=0

log x_{0}=0 +log c    (x_{0} shows the population in beginning)

Cancelling log from both sides.

c=x_{0}

So put c=x_{0} in 1

log x=kt+log x_{0}

log x=log e^{kt}+log x_{0}

log x=log e^{kt}x_{0}

x=e^{kt}x_{0}

We have been given that the population triples in a week so we have to put the value of x=2x_{0} and t=1 to get the value of k.

2x_{0}=e^{k} x_{0}

2=e^{k}

log 2=k

We have to now put the value of t=20 and k=log 2 ,to get the population after 20 weeks.

x=e^{20log 2}x_{0}

x=e^{0.30*2}x_{0}

x=e^{6}x_{0}

x=403.42x_{0}

Hence the population after 20 weeks will be 403.42x_{0} in which x_{0} is the initial population.

Learn more about growth rate at brainly.com/question/25849702

#SPJ4

The given question is incomplete as the question incudes the following:

Calculate the population after 20 weeks.

5 0
2 years ago
9660 divided by 23 ( SHOW YOUR WORK PLEASE ) <br><br> It's for a grade to turn in Handwritten notes
lorasvet [3.4K]

Answer:

420

Step-by-step explanation:

9660÷23=420

and 420×23 =9660

3 0
2 years ago
Read 2 more answers
Which angles are vertical angles and, therefore, congruent?
ch4aika [34]

Answer:

A and F

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • 3(4)<br> Solve 3(x-9)=21
    11·2 answers
  • How do you solve for 2y=x+3
    8·2 answers
  • Two similar solid shapes a and b are shown, the solids are made from the same matierial the surface area of b is 40.32cm^2 and a
    15·1 answer
  • 8x+3y=18
    11·1 answer
  • Expreessions represent The sum of 3 and n
    7·2 answers
  • the memory card on melchers digital camera can hold about 430 pictures. melcher used 18% of the memory card while taking picture
    15·1 answer
  • Ahmed found the volume of a cone having both a height and a diameter of 6 centimeters. His work is shown below. Step 1 Find the
    13·2 answers
  • A line passes through the point (–7, 5) and has a slope of One-half. Which is another point that the line passes through?
    11·2 answers
  • PLEASE ASAP FOR FULL POINTS
    5·1 answer
  • 4<img src="https://tex.z-dn.net/?f=%5Csqrt%7B-5%5E2-3%5E2%5C%5C%7D" id="TexFormula1" title="\sqrt{-5^2-3^2\\}" alt="\sqrt{-5^2-3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!