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
kirza4 [7]
3 years ago
12

A student at a junior high school for a seventh and eighth graders wishes to survey all people in the school to find out which m

ode of transportation walking riding a bike riding a bus or riding in a car is used most often to get to school Describe the population for the survey and explain how the student might select a stratified sample
Mathematics
1 answer:
hammer [34]3 years ago
4 0

Answer:

cars because people are using it everyday i use one

Step-by-step explanation:

i use one

You might be interested in
Please help! I’ll give brainliest!
anzhelika [568]

Answer:

y=3x+3

Step-by-step explanation:

the line doesnt connect with a negative so the first and third arent it. And the line cross's with a 3 not an x so the seconds on isnt the answer. Leaving the last one the answer.

5 0
3 years ago
Suppose a population of rodents satisfies the differential equation dP 2 kP dt = . Initially there are P (0 2 ) = rodents, and t
WINSTONCH [101]

Answer:

Suppose a population of rodents satisfies the differential equation dP 2 kP dt = . Initially there are P (0 2 ) = rodents, and their number is increasing at the rate of 1 dP dt = rodent per month when there are P = 10 rodents.  

How long will it take for this population to grow to a hundred rodents? To a thousand rodents?

Step-by-step explanation:

Use the initial condition when dp/dt = 1, p = 10 to get k;

\frac{dp}{dt} =kp^2\\\\1=k(10)^2\\\\k=\frac{1}{100}

Seperate the differential equation and solve for the constant C.

\frac{dp}{p^2}=kdt\\\\-\frac{1}{p}=kt+C\\\\\frac{1}{p}=-kt+C\\\\p=-\frac{1}{kt+C} \\\\2=-\frac{1}{0+C}\\\\-\frac{1}{2}=C\\\\p(t)=-\frac{1}{\frac{t}{100}-\frac{1}{2}  }\\\\p(t)=-\frac{1}{\frac{2t-100}{200} }\\\\-\frac{200}{2t-100}

You have 100 rodents when:

100=-\frac{200}{2t-100} \\\\2t-100=-\frac{200}{100} \\\\2t=98\\\\t=49\ months

You have 1000 rodents when:

1000=-\frac{200}{2t-100} \\\\2t-100=-\frac{200}{1000} \\\\2t=99.8\\\\t=49.9\ months

7 0
3 years ago
What is the product of z1 and z2 if
MaRussiya [10]

Answer:

308[cos(45) + isin(45)]

Step-by-step explanation:

z1×z2:

Modulus: r1 × r2

= 7×44 = 308

Argument: theta1 + theta2

= -70 + 115 = 45

z1z2 = 308[cos(45) + isin(45)]

Or

z1z2 = 154sqrt(2) + (i)154sqrt(2)

sqrt: square root

8 0
4 years ago
Pls help with this!!
ANEK [815]
A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
7 0
3 years ago
3x + 10 >28 inequality
ratelena [41]

Answer:

x > 6

Step-by-step explanation:

Given

3x + 10 > 28 ( subtract 10 from both sides )

3x > 18 ( divide both sides by 3 )

x > 6

5 0
4 years ago
Read 2 more answers
Other questions:
  • Lin and Jen each thought of a number. Lin thought of a 2-digit number. Jen’s number is 7 times as big as Lin’s. But, if Lin writ
    6·1 answer
  • The prime factorization of N is 3^3 * 7^r. If N has exactly 16 positive integer factors, what is the value of R?
    5·2 answers
  • Solve the equation. Identify any extraneous solutions.
    14·2 answers
  • VOLUME OF SQUARE PYRAMID HELP!
    10·2 answers
  • The area of a sector of a circle of
    10·1 answer
  • Brianna is considering taking out a loan. She estimates that she can afford monthly payments of $195 for 10 years in order to su
    7·1 answer
  • BRAINLIEST!!!<br> 2. Use the unit circle to find the value of cot (–90°).
    7·1 answer
  • Line I is parallel to line m. If the
    8·1 answer
  • Need a quick answer please
    15·1 answer
  • if the output and input of a linear equation are proportional, whare will the graph of the equation cross the x axis
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!